Perhaps you should try some spelling variations:
thanh tung » thanh cong
tham nhung » thi nhung
cam nhung » cam hung, nam nhung, cam nang
theo chu » theo chieu, cho chu, chao chu
cong ban » cong bang, cong san, cong tan
ban tran » ban trang, tan tran, ban than
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (theo chu)) xanh - thanh tung ((cam nhung) OR (tham nhung)) cong ban tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (theo chu)) xanh - thanh tung ((cam nhung) OR (tham nhung)) cong ban tran van*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (theo chu)) xanh - thanh tung ((cam nhung) OR (tham nhung)) cong ban tran van*".