Perhaps you should try some spelling variations:
chua nang » chuc nang, chua xang, kha nang
hanh tran » hanh trang, thanh tran, hanh tram
tuan dung » tuan duong, tran dung, tuan dang
trong san » trong cac, cong san, dong san
chu bang » thu bang, chuc nang, chu quang
tan dung » tran dung, tin dung, van dung
san toan » van toan, dan toan, 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 bang) OR (chua nang)) - hanh tran ((tuan dung) OR (tan dung)) trong san toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chu bang) or (chua nang)) - hanh tran ((tuan dung) OR (tan dung)) trong san toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chu bang) or (chua nang)) - hanh tran ((tuan dung) OR (tan dung)) trong san toan cau*.