Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
tuan chung » toan chung, tuan hung, xuan chung
luan chung » luan chinh
cuong danh » cuon danh, huong dan, cuong linh
manh hung » anh huong
danh toan » manh toan, anh toan, dan toan
toan cao » toan ban, toan tap

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 sang) or (chieu sach)) - manh hung ((tuan chung) OR (luan chung)) cuong danh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu sach)) - manh hung ((tuan chung) OR (luan chung)) cuong danh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (chieu sach)) - manh hung ((tuan chung) OR (luan chung)) cuong danh toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu sach)) - manh hung ((tuan chung) OR (luan chung)) cuong danh toan cao*.