Perhaps you should try some spelling variations:
"volumen1 linguistica" » "document linguistic"
"argument linguistics" » "document linguistic", "argumentacio linguistica", "management linguistic"
"ancient linguistics" » "adding linguistics", "asian linguistics", "banking linguistics"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("volumen1 linguistica") OR ((("argument linguistics") OR ("ancient linguistics")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"volumen1 linguistica\") or (((\"argument linguistics\") OR (\"ancient linguistics\"))))".
• Removing quotes may allow a broader search: (( volumen1 linguistica ) or ((( argument linguistics ) OR ( ancient linguistics )))).
• Adding a wildcard symbol may retrieve word variants: (("volumen1 linguistica") or ((("argument linguistics") OR ("ancient linguistics"))))*.