Perhaps you should try some spelling variations:
sang minh » kang minah, anh minh, song min
congo shu » cong shu
dong yan » dong yang, dong nan, wang yan
yan wang » yuan wang, yang yang, qian wang
wang hui » wang hua, wang zhi, wang wei
hui rent » hai ren
tuan » than, tan, turn

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong yan wang hui rent ((tuan minh) or (sang minh)) congo shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yan wang hui rent ((tuan minh) OR (sang minh)) congo shu ;*.