Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
trang cua » tranh cua, tang cua, trung cua
tong cong » trong cong, cong cong, dung cong
cong tan » cong tac, cong san, cong thanh
tan doan » tran doan, tap doan, van doan
doan cau » toan cau, doan dau, doan cap
hang ca » hang va, nang cao, 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: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang cua) or (hang ca)) tong cong tan doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang cua) OR (hang ca)) tong cong tan doan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang cua) or (hang ca)) tong cong tan doan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - hanh ((trang cua) or (hang ca)) tong cong tan doan cau*.