Perhaps you should try some spelling variations:
"jews communication theory" » "jews communication technology", "nets communication theory", "lea's communication theory", "mass communication theory"
"mars cooperation sara" » "early cooperation sara", "area cooperation sara", "arab cooperation sara", "mars cooperation diana", "mars cooperation early", "mars cooperation scale"
"3 migration history" » "2 migration history", "der migration history"

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: (("3 migration history") or ((("mars cooperation sara") or ("jews communication theory"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("3 migration history") OR ((("mars cooperation sara") OR ("jews communication theory")))).
• Removing quotes may allow a broader search: (( 3 migration history ) or ((( mars cooperation sara ) or ( jews communication theory )))).
• Adding a wildcard symbol may retrieve word variants: (("3 migration history") or ((("mars cooperation sara") or ("jews communication theory"))))*.