Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
duong cong » dung cong, luong cong, duong trong
hien hanh » dieu hanh
thu thuat » phau thuat, thu hut
thuat cao » thuat co, thuat bao, thuat cam
va duong » van duong, va tuong, va huong
cong thu » cong thuc, cuong thu, hong thu

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) OR (canh tranh))) or (thanh cong)) va duong cong thu thuat cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - ((((hanh trinh) OR (canh tranh))) OR (thanh cong)) va duong cong thu thuat cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - ((((hanh trinh) OR (canh tranh))) or (thanh cong)) va duong cong thu thuat cao".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - ((((hanh trinh) OR (canh tranh))) or (thanh cong)) va duong cong thu thuat cao*.