Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
manh trung » manh tung, thanh trung, manh hung
huong manh » duong manh, luong manh, phuong danh
trung cap » truong cao, trung tam
hung manh » nhung manh, hung anh, tung manh
cap dung » ap dung, cao dung, chan dung
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: hoc ((chieu sach) or (chieu sang)) - manh trung cap dung ((huong manh) OR (hung manh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - manh trung cap dung ((huong manh) OR (hung manh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (chieu sang)) - manh trung cap dung ((huong manh) OR (hung manh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu sang)) - manh trung cap dung ((huong manh) OR (hung manh)) toan ban*.