Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
cong tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tuan, trang tai
tran tan » tran tuan, tran van, tran thanh

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 trung cua nhung cong tan ((tran tap) OR (tran tan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) sach - thanh trung cua nhung cong tan ((tran tap) OR (tran tan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) sach - thanh trung cua nhung cong tan ((tran tap) OR (tran tan))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) sach - thanh trung cua nhung cong tan ((tran tap) OR (tran tan))*.