First, select a country (and, for multilingual countries, language) for which to search the database. After this selection has been made, two search interfaces - search box (using text string matching) and search tree - become available. The search box is however not available for all countries, especially not for any country where a non-Latin alphabet is used.

For survey implementation, if the search box is used, the search tree is strongly recommended as a fallback option because not all respondents succeed in responding to this question using the search box (and some don't even try).