Perhaps you should try some spelling variations:
"its colonization history" » "its communication history", "its organization history", "its cooperation history", "anti colonization history", "jews colonization history", "mars colonization history"
"data communication issues" » "data community issues", "data communication india", "data communication united", "data communications issues"
"sa communication iraq" » "sa communication iran", "sa communication israel", "sa communication italy", "la communication iraq", "a communication iraq", "asia communication iraq"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("data communication issues") or ("sa communication iraq"))) or ("its colonization history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("data communication issues") OR ("sa communication iraq"))) OR ("its colonization history")).
• Removing quotes may allow a broader search: (((( data communication issues ) or ( sa communication iraq ))) or ( its colonization history )).
• Adding a wildcard symbol may retrieve word variants: (((("data communication issues") or ("sa communication iraq"))) or ("its colonization history"))*.