Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh huong » thanh huong, anh huong, manh huong
huong cua » dung cua
cua thong » cua thuong, cua khong, cua tong
dan than » dan chan, ban than, van than
ban hang » ngan hang

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 tinh)) - hanh huong cua thong thong ((dan than) or (ban hang)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - hanh huong cua thong thong ((dan than) OR (ban hang)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu tinh)) - hanh huong cua thong thong ((dan than) or (ban hang)) cao*.