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 dan » cong san, cong tan, huong dan
chan cac » phan cac, nhan cach, thanh cac
chon cac » cho cac, thong cac, hoc cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - thanh trinh chat thuong cong dan ((chan cac) OR (chon cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (hieu lang)) - thanh trinh chat thuong cong dan ((chan cac) or (chon cac))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (hieu lang)) - thanh trinh chat thuong cong dan ((chan cac) or (chon cac))*.