Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thanh tinh » thanh binh, nhanh tinh, than kinh
khong cang » thong cong, hong bang, khong dung
hua khong » hoa khong, cua khong, hoac khong
tinh hua » tinh thua, tinh chua, tinh hoa
cang tac » cong tac, canh tac, sang tac
hang dau » hang va, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu xanh) OR (chieu sang)) - thanh tinh hua khong cang tac ((hang dau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu xanh) OR (chieu sang)) - thanh tinh hua khong cang tac ((hang dau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((chieu xanh) OR (chieu sang)) - thanh tinh hua khong cang tac ((hang dau) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: toc ((chieu xanh) OR (chieu sang)) - thanh tinh hua khong cang tac ((hang dau) or (phan tu))*.