Perhaps you should try some spelling variations:
thanh tung » thanh cong
tuan nhung » quan nhung, tuan hung, thuat nhung
doi chieu » doi chi, ho chieu, mot chieu
tung tuan » trung tuan, hung tuan, quang tuan
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
phan cau » phan dau, phan cac, phan tu

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 (doc hieu)) sach - thanh tung tuan nhung ((cong san) OR (cong tac)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - thanh tung tuan nhung ((cong san) OR (cong tac)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doc hieu)) sach - thanh tung tuan nhung ((cong san) OR (cong tac)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) sach - thanh tung tuan nhung ((cong san) OR (cong tac)) phan cau*.