Perhaps you should try some spelling variations:
"re democratization mexico" » "re democratization africa", "re democratization china", "_ democratization mexico", "13 democratization mexico", "2 democratization mexico"
"_ communication united" » "_ telecommunication united"
"re organization history" » "re organization theory", "re organisation history", "care organization history", "free organization history"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("re democratization mexico") OR ("_ communication united"))) OR ("re organization history"))~.
• Removing quotes may allow a broader search: (((( re democratization mexico ) or ( _ communication united ))) or ( re organization history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("re democratization mexico") or ("_ communication united"))) or ("re organization history"))*.