Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
guang chia » guangxi china
long thanh » luong thanh, long trinh, truong thanh
wang yang » wang yan, wang liang, wang yanling
weng fang » jing fang
wen wang » wei wang, chen wang, men want
long han » long chain, long haul, jeong han

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang guang chia ((wen wang) or (weng fang)) lin ((long han) OR (long thanh)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang guang chia ((wen wang) OR (weng fang)) lin ((long han) OR (long thanh)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang guang chia ((wen wang) or (weng fang)) lin ((long han) OR (long thanh)) ;*".