Perhaps you should try some spelling variations:
"diplomat" » "diplomats", "diplomatie", "diplomacy", "diplomt", "diplomacyt", "diplomatst"
"diplomatic" » "diplomatsic", "diplomatieic", "diplomacyic", "diplomtic", "diplomacytic", "diplomatstic"
"diplomatics" » "diplomatsics", "diplomatieics", "diplomacyics", "diplomtics", "diplomacytics", "diplomatstics", "diplomats", "diplomatie", "diplomatische"
"diploma" » "diplom", "diplomacy", "diplomats"
"diplomtics" » "diplomaticos", "diplomaticas", "diplomaticus"

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