Perhaps you should try some spelling variations:
eastern russia » eastern asia
east prussia » west russia, east frisia, la prussia
coast russia » art russia, west russia
east russia » art russia

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: ((((east prussia) OR (coast russia))) OR (((east russia) OR (eastern russia)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((east prussia) or (coast russia))) or (((east russia) OR (eastern russia))))".
• Adding a wildcard symbol may retrieve word variants: ((((east prussia) or (coast russia))) or (((east russia) OR (eastern russia))))*.