Perhaps you should try some spelling variations:
communication issues » community issues, communication india, communication united
cooperation history » corporation history, federation history
prone communication » proper communication, project communication, process communication
decolonization case » decolonization across, decolonization notes, decolonization _
mars cooperation » early cooperation, area cooperation, arab cooperation
_ decolonization » decolonization _

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( mars cooperation history ) or ( prone communication issues ))) or ( _ decolonization case ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( mars cooperation history ) OR ( prone communication issues ))) OR ( _ decolonization case )).
• Adding a wildcard symbol may retrieve word variants: (((( mars cooperation history ) or ( prone communication issues ))) or ( _ decolonization case ))*.