Perhaps you should try some spelling variations:
"diplomacia" » "diplomacy", "diplomatic", "diplomatie", "diplomacycia", "diplomatscia"
"diploma" » "diplomacy", "diplomats"
"diplomacies" » "diplomacycies", "diplomatscies", "diplomatie", "diplomatics", "diplomatiques"
"diplomates" » "diplomacytes", "diplomatstes", "diplomats", "diplomaten", "diplomate"

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: (("diplomacia" OR ("diploma" OR "diplom")) OR ("diplomacies" OR "diplomates")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"diplomacia\" or (\"diploma\" or \"diplom\")) or (\"diplomacies\" OR \"diplomates\"))".
• Removing quotes may allow a broader search: (( diplomacia or ( diploma or diplom )) or ( diplomacies OR diplomates )).
• Adding a wildcard symbol may retrieve word variants: (("diplomacia" or ("diploma" or "diplom")) or ("diplomacies" OR "diplomates"))*.