Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yan guan » gan guan, yan yuan, yang guang
tan ying » fan ying, ran ying, tan yang
ying duc » tung duc, ying hua
duc phan » duc phung, duc tran, dan phan
phan hai » pham thai, khan hadi, shang hai
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang hyoung ((yan guan) or (yang yang)) tan ying duc phan hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang hyoung ((yan guan) OR (yang yang)) tan ying duc phan hai ;*.