Perhaps you should try some spelling variations:
wang liang » wang yang
liang tun » liang sun, liang tan, liang dan
thin line » think like
thin lens » thin end
dong sind » dong sin, dong bin, dong ping
wei last » der last, few last, i last
tun wei » yun wei, june wei, tien wei
dong di » dong sin

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang tun wei last ((thin line) OR (thin lens)) ((dong di) OR (dong sind)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang tun wei last ((thin line) or (thin lens)) ((dong di) or (dong sind)) ;*.