Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
guang chen » huang cheng, chang chen, guang zhe
wang yang » wang yan, wang liang, wang yanling
dang hadi » dang hai
chen tan » chen tain, chen yang, chen jian
tan yong » tan hong, tan kong, tan yang
hong hai » shang hai, zhong tai, dang hai

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 yang guang chen tan yong kim ((hong hai) OR (dang hadi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang guang chen tan yong kim ((hong hai) or (dang hadi)) ;*.