Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
tam nhung » tham nhung, cam nhung, nam nhung
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
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: hoc chieu sang - thanh trung tam nhung ((cong ban) or (cong san)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - thanh trung tam nhung ((cong ban) OR (cong san)) phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - thanh trung tam nhung ((cong ban) or (cong san)) phan cau*.