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Search for one or more terms in one or more fields linked by different operators. And: Search the records that contain all the terms indicated in the different search fields.; Or: look for records that contain any of the terms indicated; NO: look for those records that contain the first term indicated, but not the second.

The characters * and ? look for terms that share the same root or words of doubtful spelling. Por ejemplo: 'ilustr*', recuperará las palabras ilustrador, ilustraciones, ilustrada, ilustrativo, etc.; y 'primiti?a' recuperará los términos primitiva y primitiua. No deben usarse estos caracteres como inicio de un término de búsqueda.