Catalog of studies, questions and series

The search engine uses Lucene syntax to interpret search strings ( see official documentation) ).

To be able to use this syntax, you must indicate in the search text box that you want to perform an advanced search by placing the symbol * at the beginning of the search ( see examples below ).

Attention! When using advanced search:

• The search engine may not return results if the syntax entered is not correct.

• Relevance sorting is different from simple search so the order of results may vary.

• Matches found in the texts are not highlighted

Fields to search

Here you can view the fields in which the information is stored:

^* Currently, catalog data is only available in Spanish (Castilian), represented by the international ISO 3166 standard as "es_ES".

Examples

• Get all content containing the term barometer but not January:
  * barometer - January

• Get all content that does not contain the term barometer but does contain the term "inequality" in that order:
  * -barometer +inequality

• Get all content containing the terms "election" and "Catalonia" but not "2022"
  * title_es_ES:(+elections +catalonia -2022)

• Get only content that has barometers and 2024 in the title:
  * title_es_ES:(+barometer +2024)

• Obtain only content that includes barometers and 2024 in the title but does not contain the word "health":
  * title_es_ES:(+barometer +2024 -health)

• Get all content containing the term migration in any field:
  * \*:(*migration)

• Get all the content that has asked questions about divorce
  * questions_en_US:(divorce)

• Change the weight of a term to change the relevance of the listing
  * consumer loyalty^2 in Spain