Perhaps you should try some spelling variations:
chong duong » chuong duong, cuong duong, thong duong
thanh trinh » hanh trinh, thanh tinh, thanh binh
chieu sang » chieu sach, chieu xanh, nhieu tang
luat chong » luat chung, luat cong, luat thong
hieu lang » hieu quang, nhieu tang, hieu van
duong van » duong va, luong va, dang van
van toan » van tuan, van tan, van thanh
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: doi ((chieu sang) or (hieu lang)) - thanh trinh luat chong duong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - thanh trinh luat chong duong van toan cao.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (hieu lang)) - thanh trinh luat chong duong van toan cao*.