Perhaps you should try some spelling variations:
chat thuong » chan thuong, chap thuong, chat huong
thanh trinh » hanh trinh, thanh tinh, thanh binh
thuong cong » thong cong, thuong con, thuong dong
chieu sang » chieu sach, chieu xanh, nhieu tang
trinh chat » tinh chat, trinh luat, trinh han
hieu lang » hieu quang, nhieu tang, hieu van
cong san » cong tac
san chan » san chang, dan chan, san chay
chan cac » phan cac, chon cac, nhan cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (hieu lang)) - thanh trinh chat thuong cong san chan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - thanh trinh chat thuong cong san chan cac*.