Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
hoi hieu » hoi phieu, hoi tieu, moi hieu
thang he » tang he, thang nghe, thang nho
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap
he dung » he dong, te dung, nghe dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - hanh thang he dung ((cong dan) OR (cong tan)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi hieu lang - hanh thang he dung ((cong dan) OR (cong tan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - hanh thang he dung ((cong dan) OR (cong tan)) toan cao*.