Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
rene sang » lee sang
sang minh » kang minah, anh minh, song min
minh hong » minh cong, min hong, linh hoang
tuan hua » tuan vu, yuan hui
hong shu » cong shu, tong shui, wong shiu
yan hua » ya hua, wang hua, yan guan
tan hua » wang hua, tan chia, tan puay

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 ((yan hua) or (((tan hua) OR (tuan hua)))) rene sang minh hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: zhang yan ((yan hua) OR (((tan hua) OR (tuan hua)))) rene sang minh hong shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "zhang yan ((yan hua) or (((tan hua) OR (tuan hua)))) rene sang minh hong shu ;".
• Adding a wildcard symbol may retrieve word variants: zhang yan ((yan hua) or (((tan hua) OR (tuan hua)))) rene sang minh hong shu ;*.