Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
tung tuan » trung tuan, quang tuan, trang tuan
hung tuan » hung tran, quang tuan, trung tuan
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
san phan » san pham, van phan, sat phan
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) or (hung tuan)) dang cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - thanh ((tung tuan) OR (hung tuan)) dang cong san phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - thanh ((tung tuan) or (hung tuan)) dang cong san phan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sach - thanh ((tung tuan) or (hung tuan)) dang cong san phan cau*.