Perhaps you should try some spelling variations:
"diplomat" » "diplomats", "diplomatic", "diplomatie", "diplomt", "diplomatst"
"diploma" » "diplom", "diplomats"
"diplomacy" » "diplomcy", "diplomatscy"
"diplomcys" » "diplomats", "diplomes", "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 "diplomacy")) OR "diplomcys").
• Removing quotes may allow a broader search: (( diplomat or ( diploma or diplomacy )) or diplomcys ).
• Adding a wildcard symbol may retrieve word variants: (("diplomat" or ("diploma" or "diplomacy")) or "diplomcys")*.