Perhaps you should try some spelling variations:
"diplomatie" » "diplomats", "diplomtie", "diplomacytie", "diplomatstie"
"diploma" » "diplom", "diplomacy", "diplomats"
"diplomatic" » "diplomtic", "diplomacytic", "diplomatstic"
"diplomatstsscys" » "diplomtstsscys", "diplomacytstsscys", "diplomatststsscys"

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: (("diplomatie" OR "diploma") OR ("diplomatic" OR "diplomatstsscys")).
• Removing quotes may allow a broader search: (( diplomatie or diploma ) or ( diplomatic or diplomatstsscys )).
• Adding a wildcard symbol may retrieve word variants: (("diplomatie" or "diploma") or ("diplomatic" or "diplomatstsscys"))*.