Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
dong trong » duong trong, dung trong, cong trong
tieu sach » chieu sach, dien sach, te sach
trong dan » trong dang, trong san, trong tan
cua dong » chua dong, cua cong, cua dang
dan toan » van toan, dan than, manh toan
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: theo tieu sach - ((hanh trinh) or (canh tranh)) cua dong trong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((hanh trinh) OR (canh tranh)) cua dong trong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((hanh trinh) or (canh tranh)) cua dong trong dan toan cao*.