Perhaps you should try some spelling variations:
lang ying » liang ying, huang ying, zhang ying
thin jeng » thin end
thin lens » thin line, thin end
dong ping » dong sin, dong jung, dong yang
dong bin » dong sin, dong di, dann bin
gang 3 » gang _, lang 3, wang 3
yang 8 » yang _

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ying ((gang 3) or (yang 8)) last ((thin jeng) OR (thin lens)) ((dong ping) or (dong bin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ying ((gang 3) OR (yang 8)) last ((thin jeng) OR (thin lens)) ((dong ping) OR (dong bin)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ying ((gang 3) or (yang 8)) last ((thin jeng) OR (thin lens)) ((dong ping) or (dong bin)) ;".
• Adding a wildcard symbol may retrieve word variants: lang ying ((gang 3) or (yang 8)) last ((thin jeng) OR (thin lens)) ((dong ping) or (dong bin)) ;*.