Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
theo chieu » theo chu, thi chieu
thong cong » trong cong, tong cong, thong thong
tuong cua » truong cua, huong cua, thong cua
cua thong » cua thuong, cua khong, cua tong
ho chieu » hoc thieu, doi chieu, mot chieu
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((theo chieu) OR (ho chieu))) OR (theo tieu)) sach - thanh tuong cua thong cong tac than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((theo chieu) OR (ho chieu))) or (theo tieu)) sach - thanh tuong cua thong cong tac than cao~".
• Adding a wildcard symbol may retrieve word variants: ((((theo chieu) OR (ho chieu))) or (theo tieu)) sach - thanh tuong cua thong cong tac than cao*.