Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
rene than » rene ten
than minh » tuan minh, thi minh
hua rene » hua ren, juan rene
cong seo » cong shu, cong sun, von seo
yan yi » yang yi, tan yi, yan zi
yi hua » li hua, ya hua, yi hui
hong » long

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

• Performing a fuzzy search may retrieve terms with similar spellings: zhang yan yi hua rene than minh ((cong seo) or (hong seo)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhang yan yi hua rene than minh ((cong seo) OR (hong seo)) ;.
• Adding a wildcard symbol may retrieve word variants: zhang yan yi hua rene than minh ((cong seo) or (hong seo)) ;*.