Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
khong cang » thong cong, hong bang, khong dung
hien hanh » dieu hanh
trinh hua » trinh hoa, trinh cua, trinh ha
hua khong » hoa khong, cua khong, hoac khong
dang van » hoang van, hang va
dan van » doan van, dao van, tan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien hanh - hanh trinh hua khong cang ((dan van) OR (dang van)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - hanh trinh hua khong cang ((dan van) OR (dang van)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh trinh hua khong cang ((dan van) OR (dang van)) ban*.