Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
nang huong » nang thuong, nang luong, hang thuong
chua nang » chuc nang, chua xang, kha nang
chu tinh » chau tinh, chua tinh, chu tich
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chu tinh) OR (cuu tinh)) - ((hanh tranh) OR (hanh trinh)) chua nang huong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chu tinh) OR (cuu tinh)) - ((hanh tranh) or (hanh trinh)) chua nang huong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chu tinh) OR (cuu tinh)) - ((hanh tranh) or (hanh trinh)) chua nang huong dan toan cau*.