Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
manh trung » manh tung, thanh trung, manh hung
trung tuan » trung thanh, trung tam, tran tuan
tuan hang » tuan hoang, tuan bang, tuan dang
hang cong » dang cong, hang nong, bang cong
cong van » cong vang, cong san, song van
hang ban » hang luan, hang va, hang dau
hang tai » hang va, dung 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 sang) or (chieu xanh)) - manh trung tuan hang cong van ((hang ban) OR (hang tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu xanh)) - manh trung tuan hang cong van ((hang ban) OR (hang tai)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (chieu xanh)) - manh trung tuan hang cong van ((hang ban) OR (hang tai))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu xanh)) - manh trung tuan hang cong van ((hang ban) OR (hang tai))*.