Perhaps you should try some spelling variations:
chin chang » china chang, chain change, china zhang
yang yang » wang yang, wang yan
chang won » chang soon, chang ann, chang min
yan wang » yuan wang, qian wang, yan liang
won sinn » von sinn, vom sinn
wan yan » wang yan, nan yan, wai yan
dong di » dong sin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan yan) or (dong di)) nan ((yang yang) or (yan wang)) chin chang won sinn ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan yan) OR (dong di)) nan ((yang yang) OR (yan wang)) chin chang won sinn ;*.