Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tang luan » dung luan
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
san thanh » ban thanh, van thanh, son thanh
thanh cau » thanh chau, thanh mau, nhanh cau
anh tang » anh bang, anh dang, anh nang
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu manh) or (chieu sach)) - anh tang luan dung cong san thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sach)) - anh tang luan dung cong san thanh cau.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu sach)) - anh tang luan dung cong san thanh cau*.