Perhaps you should try some spelling variations:
west frisian » des frisian, coast frisian, west eurasian
west brian » west african
wang dong » wang yong, wang hong, wang yang
john song » john wong, john bonn, john ngosong
yang lin » yang jin, wang lin, yang li
song yun » song byung, chong yun, young yun
yang xi » yang di, yang yi, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang dong ((yang lin) or (yang xi)) ((west brian) OR (west frisian)) john song yun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang dong ((yang lin) OR (yang xi)) ((west brian) OR (west frisian)) john song yun ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang dong ((yang lin) or (yang xi)) ((west brian) OR (west frisian)) john song yun ;".
• Adding a wildcard symbol may retrieve word variants: wang dong ((yang lin) or (yang xi)) ((west brian) OR (west frisian)) john song yun ;*.