Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
va chuong » van chuong, va thuong, va phuong
dong sang » dong bang, dong nang, dong song
hanh han » hanh nhan, hanh phan, hanh san
dong san » cong san, dong bang, dong von
than cap » khan cap, thanh lap, thanh cac
han va » hang va, hanh va, nhan va

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)) - hanh han va chuong ((dong sang) OR (dong san)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sach)) - hanh han va chuong ((dong sang) OR (dong san)) than cap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((hieu manh) or (chieu sach)) - hanh han va chuong ((dong sang) OR (dong san)) than cap*".