Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
hien hanh » dieu hanh
tong cong » trong cong, cong cong, dung cong
cap tong » cap nong, cap hoang, gap trong
dan toan » van toan, dan than, manh toan
van than » van thanh, van thang, van tuan

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 trang) OR (hanh trinh)) cap tong cong ((dan toan) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - ((hanh trang) OR (hanh trinh)) cap tong cong ((dan toan) OR (van than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien hanh - ((hanh trang) OR (hanh trinh)) cap tong cong ((dan toan) or (van than)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - ((hanh trang) OR (hanh trinh)) cap tong cong ((dan toan) or (van than)) cau*.