Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
phuong ban » phuong bang, phuong lan, phong ban
phuong bac » phuong cach, phuong tay, phuong mai
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
quan ha » quan he

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)) - thanh trung cua nhung ((phuong ban) or (phuong bac)) quan ha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - thanh trung cua nhung ((phuong ban) OR (phuong bac)) quan ha.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - thanh trung cua nhung ((phuong ban) or (phuong bac)) quan ha".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - thanh trung cua nhung ((phuong ban) or (phuong bac)) quan ha*.