Perhaps you should try some spelling variations:
nhung dong » nhung don, nhung cong, nhung dung
thanh tran » thanh trang, thanh toan, thanh tuan
thanh tra » thanh toan, thanh hoa
theo yeu » theo tieu, thiet yeu, theo chu
yeu sach » su sach, te sach, vu sach
trang va » tran van, hang va
tang va » tang van, thang va, tang vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo yeu sach - hanh ((tang va) or (trang va)) nhung dong ((thanh tran) OR (thanh tra)) tuan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo yeu sach - hanh ((tang va) OR (trang va)) nhung dong ((thanh tran) OR (thanh tra)) tuan*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo yeu sach - hanh ((tang va) or (trang va)) nhung dong ((thanh tran) OR (thanh tra)) tuan*".