Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh dong » ha dong
tong cong » trong cong, cong cong, dung cong
thanh cac » hanh cac, thanh bac, thanh ca
anh dong » anh huong, anh son
cong ban » cong bang, cong san, cong tan
than cap » khan cap, thanh lap, than cua
va tong » va thong, va tuong, va trong

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 sach - ((hanh dong) OR (anh dong)) va tong cong ban ((than cap) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((hanh dong) OR (anh dong)) va tong cong ban ((than cap) OR (thanh cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((hanh dong) OR (anh dong)) va tong cong ban ((than cap) or (thanh cac))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((hanh dong) OR (anh dong)) va tong cong ban ((than cap) or (thanh cac))*.