Perhaps you should try some spelling variations:
"diplomat" » "diplomatie", "diplomacy", "diplomacyt"
"diplomats" » "diplomaties", "diplomacys", "diplomacyts", "diplomacy"
"diplomatic" » "diplomatieic", "diplomacyic", "diplomacytic"
"diploma" » "diplomacy"

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