Perhaps you should try some spelling variations:
"diplomat" » "diplomatic", "diplomatie", "diplomacy", "diplomacyt"
"diplomats" » "diplomatics", "diplomaties", "diplomacys", "diplomacyts", "diplomatic", "diplomacy"
"diploma" » "diplomacy"
"diplomacys" » "diplomacycys", "diplomacy", "diplomacies", "diplomas"

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