Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
tong cong » trong cong, cong cong, dung cong
doanh cao » doanh co, doanh bao, doanh cho
hoc hieu » hoc thieu, hoc hien, doc hieu
cua tong » cua cong, cua dong, cua nong
cong tap » cuong tap, cong tac, cong tan
doan cap » dan ca, toan cao, doan va

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 - ((hanh trinh) or (canh tranh)) cua tong cong tap ((doan cap) or (doanh cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh trinh) OR (canh tranh)) cua tong cong tap ((doan cap) OR (doanh cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh trinh) or (canh tranh)) cua tong cong tap ((doan cap) or (doanh cao))*.