Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh dung » thanh dung, anh dung, hanh dong
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
hoang cao » hoang bao, hoang hao, hoang thao
cong ban » cong bang, cong san, cong tan
hang cao » nang cao, hang ca, hang 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 ((chieu xanh) or (chieu sang)) - hanh dung luan nang cong ban ((hang cao) OR (hoang cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - hanh dung luan nang cong ban ((hang cao) OR (hoang cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - hanh dung luan nang cong ban ((hang cao) OR (hoang cao))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - hanh dung luan nang cong ban ((hang cao) OR (hoang cao))*.