Perhaps you should try some spelling variations:
hanh trinh » canh tranh
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong cong » cong dong, trong cong, dung cong
nhanh cau » nhanh cay, thanh chau, hang cau
toc hieu » toc thieu, doc hieu, hoc thieu
cong tac » cong ty
nhanh ha » thanh hoa, thanh hai, khanh hoa

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 - ((hanh trinh) or (hanh chinh)) cua cong cong tac ((nhanh cau) or (nhanh ha))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - ((hanh trinh) OR (hanh chinh)) cua cong cong tac ((nhanh cau) OR (nhanh ha)).
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - ((hanh trinh) or (hanh chinh)) cua cong cong tac ((nhanh cau) or (nhanh ha))*.