Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
yun cheng » yu cheng, yun chen, su cheng
shang hai » shang kai, dang hai, chang ha
yin yang » ying yang, yi yang, yin fang
yang jin » yang jie, yang jun, ying jin
tan yin » tan ying, tan xin, tan yi
yang yi » yang xi, yang jui

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

• Performing a fuzzy search may retrieve terms with similar spellings: tan yin yang ((yun cheng) OR (yuan cheng)) ((((yang di) or (yang jin))) or (yang yi)) shang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tan yin yang ((yun cheng) OR (yuan cheng)) ((((yang di) OR (yang jin))) OR (yang yi)) shang hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tan yin yang ((yun cheng) OR (yuan cheng)) ((((yang di) or (yang jin))) or (yang yi)) shang hai ;*".