Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
dung cong » dung trong
chinh cau » chinh chau, chinh ca, chinh can
ho chieu » theo chieu, hoc thieu, doi chieu
thi dung » thi huong, thi nhung, thi cong
cong ban » cong bang, cong san, cong tan
chan cau » phan cau, can cau, nhanh cau

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 xanh - ((thanh trung) or (canh tranh)) thi dung cong ban ((chan cau) or (chinh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((thanh trung) OR (canh tranh)) thi dung cong ban ((chan cau) OR (chinh cau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - ((thanh trung) or (canh tranh)) thi dung cong ban ((chan cau) or (chinh cau))*.