Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
phap hieu » phap viet
phan hieu » van hieu, phan kien, gian hieu
tong cong » trong cong, cong cong, dung cong
thang he » tang he, thang nghe, thang nho
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
toan ban » van ban
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: ((phap hieu) or (phan hieu)) lang - hanh thang he tong cong dan ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((phap hieu) OR (phan hieu)) lang - hanh thang he tong cong dan ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((phap hieu) or (phan hieu)) lang - hanh thang he tong cong dan ((toan cao) or (toan ban))*.