Perhaps you should try some spelling variations:
"diplomat" » "diplomatie", "diplomacy", "diplom", "diplomt", "diplomacyt"
"diplomats" » "diplomaties", "diplomacys", "diploms", "diplomts", "diplomacyts", "diplomacy"
"diplomatic" » "diplomatieic", "diplomacyic", "diplomic", "diplomtic", "diplomacytic"
"diploma" » "diplom", "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 ("diplomats" OR "diplomatic")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"diplomat\" or \"diploma\") or (\"diplomats\" OR \"diplomatic\"))".
• Removing quotes may allow a broader search: (( diplomat or diploma ) or ( diplomats OR diplomatic )).
• Adding a wildcard symbol may retrieve word variants: (("diplomat" or "diploma") or ("diplomats" OR "diplomatic"))*.