Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
tong cong » trong cong, cong cong, dung cong
cong cua » cong cu, dong cua, huong cua
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) OR (theo tieu)) sach - hanh ((cong cua) or (manh cua)) tong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - hanh ((cong cua) OR (manh cua)) tong cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sach - hanh ((cong cua) or (manh cua)) tong cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sach - hanh ((cong cua) or (manh cua)) tong cong dan than cao*.