Perhaps you should try some spelling variations:
"les communications series" » "les communication series", "les communications services", "les communication services", "laos communications series", "nps communications series", "u.s communications series"
"mass communication issues" » "mass community issues", "mass communication india", "mass communication united", "maps communication issues"
"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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("les communications series") OR ("mass communication issues"))) OR ("u.s migration history"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"les communications series\") OR (\"mass communication issues\"))) OR (\"u.s migration history\"))".
• Removing quotes may allow a broader search: (((( les communications series ) OR ( mass communication issues ))) OR ( u.s migration history )).
• Adding a wildcard symbol may retrieve word variants: (((("les communications series") OR ("mass communication issues"))) OR ("u.s migration history"))*.