Perhaps you should try some spelling variations:
yan liang » yang liang, wang liang, you liang
thin lens » thin line, thin end
dong ping » dong jung, dong yang, ting ping
liang li » ling li, qiang li, liang wei
nan thin » man thing, a thin, n thin
dong bin » dong di
wan yan » wang yan, nan yan, wai yan
li nan » lin nan, li lan, li ran

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan liang li nan thin lens ((((((dong bin) OR (dong sin))) OR (dann bin))) OR (dong ping)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan yan liang li nan thin lens ((((((dong bin) OR (dong sin))) OR (dann bin))) OR (dong ping)) ;*.