Perhaps you should try some spelling variations:
"pro colonization history" » "pro communication history", "pro organization history", "pro civilization history", "bio colonization history", "re colonization history", "mars colonization history"
"global cooperation history" » "global corporation history", "global federation history", "global competition history", "regional cooperation history"
"mass communication iran" » "mass communication iraq", "mass communication ireland", "mass communication brands", "maps communication iran"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("mass communication iran") OR ("pro colonization history"))) OR ("global cooperation history"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mass communication iran\") OR (\"pro colonization history\"))) OR (\"global cooperation history\"))".
• Removing quotes may allow a broader search: (((( mass communication iran ) OR ( pro colonization history ))) OR ( global cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("mass communication iran") OR ("pro colonization history"))) OR ("global cooperation history"))*.