Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung hoc » trung quoc
hang cong » dang cong, hang nong, bang cong
cong hang » cong thang, cong hung, cong lang
thuong tu » thong tu, tuong tu, huong tu
hoc hang » hoc hanh, hoc bang, hoc tang

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) or (chieu tinh)) - thanh trung hoc hang cong hang thuong tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu tinh)) - thanh trung hoc hang cong hang thuong tu.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu tinh)) - thanh trung hoc hang cong hang thuong tu*.