Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
nhanh cau » nhanh cay, thanh chau, nhanh ha
ho chieu » theo chieu, doi chieu, mot chieu
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
thanh ca » thanh cha, thanh cac, thanh ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (hoc thieu)) sach - thanh trung cua dung cong tac ((thanh ca) or (nhanh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh trung cua dung cong tac ((thanh ca) OR (nhanh cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - thanh trung cua dung cong tac ((thanh ca) or (nhanh cau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - thanh trung cua dung cong tac ((thanh ca) or (nhanh cau))*.