Search tutorial

Revision as of 14:27, 4 November 2020 by Rosemeire.pinto (Talk | contribs) (Top data fields used in VHL)

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About VHL Search portal

The VHL Search portal provides information sources in the health sciences in order to improve the access of scientific and technical information for professionals and students in this area.

The VHL Regional Portal interface is available for free in Portuguese, Spanish and English at

Starting the search in the Portal

To start your search type meaningful words and / or terms (subject descriptors) in the search box.

See the example below:


Search tips

Kit básico de pesquisaINGLES.jpeg

Clusters or Filters

The clusters are formed from the set of references of documents retrieved in the search by range of relevance and helps to refine the search result.

Clusters area

This area can be found on the right side of the result page.


Search result

Access to more than 60 databases and the possibility to follow the entry of new content by RSS or XML that allows the export of data between systems.


Access to full text

When you find the document in the search result the system tells you where or how to get the full text and offers others display formats, see details below:


BIREME informs that the SCAD (Document Delivery Service) is temporarily unavailable. For more information access the site: <>

Search by Subject Descriptor

By clicking subject descriptor lookup the search will be made in the DeCS (Descriptors in Health Sciences) and its qualifiers.



Refine the search using the option "Subject descriptor lookup"

You can associate the descriptors in a previously carried out search. The descriptor will appear as filter. Imagem11.png

Advanced Search

In the Advanced search option, meaningful words or terms are combined by filling in the search form.



Search using the field codes

The search strategies can also be developed with the field codes in the search forms or in the search box on the VHL portal. Each method takes a proper syntax to include the search.

  • Syntax for inclusion of field code in integrated method of search(iAHx): field code follow by : (colons)

Exemplo: MH:"yellow fever"

Top data fields used in VHL

Main Search Fields – LILACS

Tag Description Search on IAHx
TI Original Title and Translated Title of citations By words or "phrases"


TI:"yellow fever"

TW Text Words (words) Title + Abstract + DeCS/MeSH terms By words or "phrases"


TW:"acute hepatitis"

AB Abstract of journal articles and documents By words or "phrases"

AB:"genetic diseases"


DeCS/MeSH terms Trilingual Descriptors Portuguese, Spanish, English.

To explode the category of Descriptor use * after the category number

MH:"renal dialysis"

= MH:"dialise renal"

= MH:"dialisis renal"

= MH:E02.870.300

Explode = MH:E02.870.300*

Primary DeCS/MeSH terms.

Descriptors that reflect the major points of the article


MJ:"Influenza vaccines"

Publication type is included in DeCS/MeSH PT:"clinical trial"

= PT:"ensayo clinico"

= PT:"ensaio clinico"

DA Year of Publication Year and month (yyyymm)

DA:201001 - retrieves articles published in January 2010

DA:2010$ - all 2010

DA:2010$ OR DA:2011$ - retrieves year 2010 and 2011

AU Autor
  • MEDLINE - surname followed by initials (eg Jatene AD)
  • LILACS (databases) - surname and full name or abbreviated (according to the document) separated by comma

(eg. Jatene, Adib Domingues ou Jatene, Adib D, ou Jatene, A. Domingues ou Jatene, Adib, etc)

AU:"Yunes J"

AU:"Jatene, Adib D"

TA Journal

Title of the journal

LA Language

Retrieve documents by selected language

AID Article identifier. Includes identifiers for articles submitted by journal editors, such as DOI (Digital Object Identifier). aid:"10.1016/j.vaccine.2020.01.093"
AUID Author identifier. Unique identifier associated with the name of the author, organization or researcher. Ex: ORCID or WOS number. auid:"0000-0003-3504-118X"
AFP Country affiliation. Affiliation country of the author of the document. Enter the country in lowercase quotation marks. afp:"brazil"

afp:"costa rica"