Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
phan hieu » van hieu, phan kien, gian 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 tong » he thong, he trong, he cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nghe hieu) or (phan hieu)) lang - hanh thang he tong ((cong dan) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nghe hieu) OR (phan hieu)) lang - hanh thang he tong ((cong dan) OR (cong tan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ((nghe hieu) or (phan hieu)) lang - hanh thang he tong ((cong dan) or (cong tan)) toan cao*.