Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
manh tuong » manh tung, manh cuong, minh tuong
cao nhung » cho nhung, cao chung, co nhung
cam nhung » cam hung, nam nhung, tham nhung
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 xanh) or (chieu sang)) - manh tuong ((cao nhung) OR (cam nhung)) cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - manh tuong ((cao nhung) OR (cam nhung)) cong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sang)) - manh tuong ((cao nhung) OR (cam nhung)) cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - manh tuong ((cao nhung) OR (cam nhung)) cong dan van ban*.