Perhaps you should try some spelling variations:
wang luhang » wang liang, wang lihong, wang yuhan
tuan hua » tuan vu, yuan hui
dan yang » daun yang, wang yang, yang yang
tan yang » tan ying, tan yong, tao yang
lee sang » lee ann
sang hai » shang hai, dang hai, sang dae
tan hua » wang hua, tan chia, tan puay

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 luhang ((tan hua) OR (tuan hua)) ((dan yang) OR (tan yang)) lee sang hai ;~.
• Adding a wildcard symbol may retrieve word variants: wang luhang ((tan hua) or (tuan hua)) ((dan yang) or (tan yang)) lee sang hai ;*.