Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thanh tung » thanh cong
phan chung » phan cung, phan hung, phan thuong
chung cong » nhung cong, chong cong, phung cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » hieu quang, nhieu tang, hieu van
tung phan » trung phan, tuong phan, dung phan
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (((chieu sang) or (hieu lang)))) - thanh tung phan chung cong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (((chieu sang) OR (hieu lang)))) - thanh tung phan chung cong san toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (((chieu sang) or (hieu lang)))) - thanh tung phan chung cong san toan cao*.