Perhaps you should try some spelling variations:
wang liang » wang yang
wang wang » wang yang, wang yan, wang yong
liang dan » liang tan, king dan, liang sun
thin lens » thin line, thin end
dong sind » dong sin, dong ping
yat thin » a thin
dong bin » dong sin, dong di, dann bin
dan yat » dan data, dan yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang liang dan yat thin lens ((dong sind) or (dong bin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang liang dan yat thin lens ((dong sind) OR (dong bin)) ;*.