Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
yang wang » yang yang, yan wang, yang guang
sang minh » kang minah, anh minh, song min
congo shu » cong shu
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 yang wang hui rent ((tuan minh) or (sang minh)) congo shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang wang hui rent ((tuan minh) OR (sang minh)) congo shu ;*.