Perhaps you should try some spelling variations:
thanh nhung » thanh hung, tranh nhung, thanh chuong
chieu sach » chinh sach, chiet tach, chieu sang
hanh nhung » anh nhung, canh nhung, doanh nhung
hieu manh » chieu xanh, hieu nganh, dieu hanh
manh tung » manh hung, thanh tung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

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