Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
fang yuan » wang yuhan, wang yan, meng yuan
dang haji » dato haji
tan ying » fan ying, tan yang, tan yong
ran ying » fan ying, jin ying, gao ying
yang yi » yang di, yang jui
yang xi » yang di, yang jui
hai » hadi, hari, thai

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: ((tan ying) OR (ran ying)) fang yuan cheng ((yang yi) OR (yang xi)) ((dang haji) OR (dang hai)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan ying) or (ran ying)) fang yuan cheng ((yang yi) or (yang xi)) ((dang haji) OR (dang hai)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan ying) or (ran ying)) fang yuan cheng ((yang yi) or (yang xi)) ((dang haji) OR (dang hai)) ;*.