Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
toc hieu » toc thieu, doc hieu, hoc thieu
cach bao » cach nao, sach bao, cach giao
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan tu » phan tu, han tu, chon tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - cach bao ((cua dung) or (cua dang)) cong tan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - cach bao ((cua dung) OR (cua dang)) cong tan chan tu.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - cach bao ((cua dung) or (cua dang)) cong tan chan tu*.