Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hay khong » bay khong, hang khong, hoac khong
hua khong » hoa khong, cua khong, hoac khong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - thanh trung ((hay khong) or (hua khong)) cong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung ((hay khong) OR (hua khong)) cong tan phan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - thanh trung ((hay khong) or (hua khong)) cong tan phan cau*.