Perhaps you should try some spelling variations:
"bibliotecarios escolares" » "bibliotecas escolares"
"bibliotecarios cuales" » "bibliotecarios ala", "bibliotecarios que", "bibliotecarios en"
"biblioteca escolar" » "bibliotecas escolares"
"bibliotecario a" » "bibliotecario 1", "bibliotecario 8", "bibliotecario y"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("bibliotecarios cuales") or ("bibliotecario a"))) or ((("bibliotecarios escolares") or ("biblioteca escolar"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bibliotecarios cuales") OR ("bibliotecario a"))) OR ((("bibliotecarios escolares") OR ("biblioteca escolar")))).
• Removing quotes may allow a broader search: (((( bibliotecarios cuales ) or ( bibliotecario a ))) or ((( bibliotecarios escolares ) or ( biblioteca escolar )))).
• Adding a wildcard symbol may retrieve word variants: (((("bibliotecarios cuales") or ("bibliotecario a"))) or ((("bibliotecarios escolares") or ("biblioteca escolar"))))*.