Perhaps you should try some spelling variations:
coast frisian » east frisia
lang yanling » wang yanling, wang yangming, zhang yunling
west frisian » des frisian, west eurasian, west african
john wong » john song, john bonn
ying jin » yang jin, jing ji, yang jie
wong sam » wong sau, wong lai, kong sar
yang » wang

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: lang yanling ((ying jin) OR (yang di)) ((west frisian) OR (coast frisian)) john wong sam ;~.
• Adding a wildcard symbol may retrieve word variants: lang yanling ((ying jin) or (yang di)) ((west frisian) or (coast frisian)) john wong sam ;*.