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 iran" » "lea's communication iran", "mass communication iran", "c's communication iran", "nets communication iraq", "nets communication ireland", "nets communication brands"
"u.s migration history" » "mass migration history", "does migration history", "1 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 iran\"))) OR (\"u.s migration history\"))~".
• Removing quotes may allow a broader search: (((( its communication issues ) OR ( nets communication iran ))) OR ( u.s migration history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("its communication issues") OR ("nets communication iran"))) OR ("u.s migration history"))*.