Perhaps you should try some spelling variations:
"its communication issues" » "its community issues", "its communication india", "its communication united", "c's communication issues", "mass communication issues", "les communications issues"
"nets communication iraq" » "lea's communication iraq", "mass communication iraq", "c's communication iraq", "nets communication iran", "nets communication israel", "nets communication italy"
"mass migration history" » "maps migration history"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"its communication issues\") OR (\"nets communication iraq\"))) OR (\"mass migration history\"))~".
• Removing quotes may allow a broader search: (((( its communication issues ) OR ( nets communication iraq ))) OR ( mass migration history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("its communication issues") OR ("nets communication iraq"))) OR ("mass migration history"))*.