Perhaps you should try some spelling variations:
diplomatie » diplomatic, diplomtie, diplomacytie
diploma » diplom, diplomacy
diplomats » diplomts, diplomacyts, diplomatic, diplomacy
diplomcys » diplomacy, 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: (( diplomatie OR diploma ) OR ( (diplomcys OR diplomats) OR diplomtststsscys )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( diplomatie or diploma ) or ( (diplomcys OR diplomats) or diplomtststsscys ))".
• Adding a wildcard symbol may retrieve word variants: (( diplomatie or diploma ) or ( (diplomcys OR diplomats) or diplomtststsscys ))*.