Perhaps you should try some spelling variations:
"de communication issues" » "de community issues", "de communication india", "de communication united", "mobile communication issues", "online communication issues"
"its decolonization notes" » "its decolonization models", "its decolonization case", "its decolonization indonesia", "its colonization notes", "_ decolonization notes", "box decolonization notes"
"early cooperation studies" » "early cooperation series", "early cooperation sources", "early cooperation implies", "early operation studies", "early cooperative studies", "energy cooperation studies"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("de communication issues") or ((("early cooperation studies") or ("its decolonization notes"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("de communication issues") OR ((("early cooperation studies") OR ("its decolonization notes"))))*.
• Removing quotes may allow a broader search: (( de communication issues ) or ((( early cooperation studies ) or ( its decolonization notes ))))*.