Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nang huong » nang thuong, bang phuong, nang truong
nang luong » nang song
hien hanh » dieu hanh
trinh ve » trinh he, trinh va, trinh vi
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 ve ((((nang huong) OR (nang luong))) or (hang thuong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - hanh trinh ve ((((nang huong) OR (nang luong))) OR (hang thuong)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - hanh trinh ve ((((nang huong) OR (nang luong))) or (hang thuong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - hanh trinh ve ((((nang huong) OR (nang luong))) or (hang thuong)) dan toan cao*.