Perhaps you should try some spelling variations:
"nets communication issues" » "nets community issues", "nets communication india", "nets communication united", "lea's communication issues", "mass communication issues", "c's communication issues"
"les communications iraq" » "les communication iraq", "les communication iran", "les communications brand", "laos communications iraq", "nps communications iraq", "u.s communications iraq"
"city cooperation history" » "city corporation history", "city federation history", "china cooperation history", "city corporations history"

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: (((("les communications iraq") or ("nets communication issues"))) or ("city cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("les communications iraq") OR ("nets communication issues"))) OR ("city cooperation history")).
• Removing quotes may allow a broader search: (((( les communications iraq ) or ( nets communication issues ))) or ( city cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("les communications iraq") or ("nets communication issues"))) or ("city cooperation history"))*.