Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, truong thanh
anh dang » anh dong, anh bang, anh danh
anh dung » anh dong, anh huong, sach dung
cua phan » cua nhan, cua phap, cua han
cong tan » cong tac, cong san, cong ty
toan cao » toan ban, toan tap

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 sach - ((anh dang) OR (anh dung)) cua phan ((cong thanh) OR (cong tan)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((anh dang) or (anh dung)) cua phan ((cong thanh) OR (cong tan)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((anh dang) or (anh dung)) cua phan ((cong thanh) OR (cong tan)) toan cao*.