Perhaps you should try some spelling variations:
"c's communication issues" » "c's community issues", "c's communication india", "c's communication united", "lea's communication issues", "class communication issues", "mass communication issues"
"_ colonization history" » "_ communication history", "_ organization history", "_ cooperation history"
"nets communication iraq" » "lea's communication iraq", "mass communication iraq", "les communications iraq", "nets communication iran", "nets communication israel", "nets communication italy"

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: (("_ colonization history") OR ((("nets communication iraq") OR ("c's communication issues"))))~.
• Removing quotes may allow a broader search: (( _ colonization history ) or ((( nets communication iraq ) or ( c's communication issues ))))~.
• Adding a wildcard symbol may retrieve word variants: (("_ colonization history") or ((("nets communication iraq") or ("c's communication issues"))))*.