Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
nang huong » nang thuong, nang luong, hang thuong
theo dieu » theo tieu, theo chieu, thuoc dieu
chua nang » chuc nang, chua xang, kha nang
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo dieu hanh - ((hanh tranh) or (canh tranh)) chua nang huong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dieu hanh - ((hanh tranh) OR (canh tranh)) chua nang huong dan than cau*.