Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo mau » tho mau, theo dau, theo chu
mau sach » mat sach, cau sach, hau sach
vat dang » van dang, va dang, vat dong
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
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: theo mau sach - hanh trinh ((vat dang) OR (vat dung)) cong dan toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo mau sach - hanh trinh ((vat dang) or (vat dung)) cong dan toan cau*.