Perhaps you should try some spelling variations:
thanh tung » thanh cong
quan nhung » qua nhung, cua nhung, luan chung
doi chieu » doc hieu, doi chi, mot chieu
tung quan » tuong quan, trung quan, dung quan
ho chieu » theo chieu, hoc thieu, mot chieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (ho chieu)) sach - thanh tung quan nhung ((cong tan) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) sach - thanh tung quan nhung ((cong tan) OR (cong san)) toan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) sach - thanh tung quan nhung ((cong tan) or (cong san)) toan tap*".