Perhaps you should try some spelling variations:
"_ communication iraq" » "_ communication iran", "_ communication israel", "_ communication italy"
"re colonization songs" » "re colonization still", "re colonization work", "re decolonization notes", "pro colonization songs", "_ colonization songs", "jews colonization songs"
"china cooperation state" » "asian cooperation state", "regional cooperation state", "china cooperation scale", "china operation state", "china cooperation strategy"

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: (("_ communication iraq") OR ((("china cooperation state") OR ("re colonization songs"))))~.
• Removing quotes may allow a broader search: (( _ communication iraq ) or ((( china cooperation state ) or ( re colonization songs ))))~.
• Adding a wildcard symbol may retrieve word variants: (("_ communication iraq") or ((("china cooperation state") or ("re colonization songs"))))*.