Perhaps you should try some spelling variations:
thanh tung » thanh cong
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
nho hieu » nha hieu, nho sieu, nhu hieu
cong van » cong vang, song van, cong tan
cong san » cong tac
toan cao » toan ban, toan tap

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: nho hieu lang - ((hanh trinh) OR (thanh tung)) cua nhung ((cong van) OR (cong san)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nho hieu lang - ((hanh trinh) or (thanh tung)) cua nhung ((cong van) OR (cong san)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: nho hieu lang - ((hanh trinh) or (thanh tung)) cua nhung ((cong van) OR (cong san)) toan cao*.