Perhaps you should try some spelling variations:
"city cooperation implies" » "city cooperation series", "city cooperation studies", "city cooperation civility", "city corporation implies", "china cooperation implies", "city corporations implies"
"class communication iran" » "mass communication iran", "plans communication iran", "crisis communication iran", "class communication iraq", "class communication ireland", "class communication brands"
"its colonization still" » "its colonization failed", "its colonization israel", "its colonization songs", "anti colonization still", "jews colonization still", "mars colonization still"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("class communication iran") or ((("its colonization still") or ("city cooperation implies"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("class communication iran") OR ((("its colonization still") OR ("city cooperation implies")))).
• Removing quotes may allow a broader search: (( class communication iran ) or ((( its colonization still ) or ( city cooperation implies )))).
• Adding a wildcard symbol may retrieve word variants: (("class communication iran") or ((("its colonization still") or ("city cooperation implies"))))*.