Perhaps you should try some spelling variations:
hanh trinh » canh tranh
hop nhieu » hoc thieu, ho chieu, he nhieu
quan dung » quang dung, quan duong, qua dung
trong dan » trong dang, trong san, trong tan
ho nhieu » ho chieu, he nhieu, hoc thieu
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho nhieu) or (hop nhieu)) tang - ((hanh trinh) OR (hanh chinh)) quan dung trong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho nhieu) OR (hop nhieu)) tang - ((hanh trinh) OR (hanh chinh)) quan dung trong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho nhieu) or (hop nhieu)) tang - ((hanh trinh) OR (hanh chinh)) quan dung trong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho nhieu) or (hop nhieu)) tang - ((hanh trinh) OR (hanh chinh)) quan dung trong dan toan cau*.