Perhaps you should try some spelling variations:
than china » tuan china, han china, wuhan china
liang sun » liang dan, liang tan, wing sun
gain yang » daun yang, tan yang, yin yang
bin zhang » binh thang, li zhang, jia zhang
zhang hai » zhang dai, shang hai, zhang han
dan yang » daun yang, tan yang, wang yang
han hua » tan hua, wang hua, tuan hua

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: liang sun ((han hua) OR (than china)) ((gain yang) OR (dan yang)) bin zhang hai ;~.
• Adding a wildcard symbol may retrieve word variants: liang sun ((han hua) or (than china)) ((gain yang) or (dan yang)) bin zhang hai ;*.