Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
wang yuan » wang yuhan, wang yan, fang yuan
chang dam » chang ha, chang mae, chang dagmar
rein gang » ein gang, ein ganz, den gang
dam rein » dam region, am rhein, der rein
gang li » gan li, tang li, wang li
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yuan chang dam rein gang li ((cong shu) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yuan chang dam rein gang li ((cong shu) OR (hong yu)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yuan chang dam rein gang li ((cong shu) or (hong yu)) ;*.