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", "les communications issues"
"city cooperation history" » "city corporation history", "city federation history", "china cooperation history", "city corporations history"
"c's communication via" » "lea's communication via", "class communication via", "mass communication via", "c's communication a", "c's communication _", "c's communication 3"

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