Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung cap » trung tam
tong cong » trong cong, cong cong, dung cong
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sach)) - thanh ((truong cao) or (trung cap)) tong cong tan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - thanh ((truong cao) OR (trung cap)) tong cong tan phan tu.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - thanh ((truong cao) or (trung cap)) tong cong tan phan tu*.