Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tien manh » tien anh, tien thanh, tieng anh
hanh manh » hanh mang, lanh manh, hoang manh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
van nhanh » van thanh, van hanh, van khanh
nhanh cau » nhanh cay, thanh chau, nhanh ha
manh cua » doanh cua, ban cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (tien manh)) - hanh manh cua ((hang cong) or (bang cong)) van nhanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (tien manh)) - hanh manh cua ((hang cong) OR (bang cong)) van nhanh cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (tien manh)) - hanh manh cua ((hang cong) or (bang cong)) van nhanh cau*.