Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
yuhan chan » wuhan can, yuan chang
long thanh » luong thanh, long han, long trinh
yang lin » yang jin, wang lin, yang liang
yang li » yang xi, yang yi, tang li
c gain » _ gain, n gain
5 gain » 5 grain, _ gain, n gain

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuhan chan ((c gain) OR (5 gain)) ((((yang lin) or (yang li))) or (yang di)) long thanh ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuhan chan ((c gain) OR (5 gain)) ((((yang lin) OR (yang li))) OR (yang di)) long thanh ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yuhan chan ((c gain) OR (5 gain)) ((((yang lin) or (yang li))) or (yang di)) long thanh ;".
• Adding a wildcard symbol may retrieve word variants: wang yuhan chan ((c gain) OR (5 gain)) ((((yang lin) or (yang li))) or (yang di)) long thanh ;*.