Perhaps you should try some spelling variations:
"diplomacia" » "diplomacy", "diplomatic", "diplomatie", "diplomacycia"
"diploma" » "diplomacy"
"diplomats" » "diplomacyts", "diplomatic", "diplomacy"
"diplomatics" » "diplomacytics", "diplomatic", "diplomatie", "diplomatische"

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: (("diplomacia" OR (("diploma" OR "diplomats") OR "diplom")) OR "diplomatics")*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"diplomacia\" or ((\"diploma\" OR \"diplomats\") or \"diplom\")) or \"diplomatics\")*".
• Removing quotes may allow a broader search: (( diplomacia or (( diploma OR diplomats ) or diplom )) or diplomatics )*.