Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
chuc hach » chuc hanh, thuc hanh, chuc danh
tung quan » tuong quan, trung quan, dung quan
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
ban dan » ban hang, ban hanh, ban quan
dan cau » danh cau, dan ca, dat cau

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

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