Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
yang guang » yang yang, yan guan
tuan hua » tuan vu, yuan hui
y.c long » 3.2 long, 3.1 long, 2.2 long
tan hua » wang hua, tan chia, tan puay
pei yun » lei kyun, mei yung, pei yang
yun y.c » yang y.c

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: ((yang liang) OR (yang guang)) ((tuan hua) OR (tan hua)) pei yun y.c long run ;~.
• Adding a wildcard symbol may retrieve word variants: ((yang liang) or (yang guang)) ((tuan hua) or (tan hua)) pei yun y.c long run ;*.