Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
thanh phan » thanh pho, thanh san, thanh toan
tuan dung » tuan duong, tran dung, tan dung
trong bac » trong cac, trong ban, trong ba
thanh van » thanh san, thanh toan, thanh nhan

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 sach)) - hanh trung tuan dung trong bac ((thanh van) OR (thanh phan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh trung tuan dung trong bac ((thanh van) OR (thanh phan)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - hanh trung tuan dung trong bac ((thanh van) OR (thanh phan))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hanh trung tuan dung trong bac ((thanh van) OR (thanh phan))*.