Perhaps you should try some spelling variations:
logicos relacionales » logico relacional, marcos relacionales, aspectos relacionales
instituto oncologia » instituto oncologico, institucion oncologica, instituto oncol
oncologia nacional » oncologico nacional, ontologia relacional, economia nacional
instituto logicos » instituto medico, instituto clinico, instituto los

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( instituto oncologia nacional ) or ( instituto logicos relacionales ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( instituto oncologia nacional ) OR ( instituto logicos relacionales )).
• Adding a wildcard symbol may retrieve word variants: (( instituto oncologia nacional ) or ( instituto logicos relacionales ))*.