Perhaps you should try some spelling variations:
duong manh » duong van
hanh sinh » hanh tinh, hanh dinh, hinh sinh
manh toan » thanh toan, anh tuan, tinh toan
30 trieu » 25 trieu
cua dung » cua dang, cua rung, cua nhung
cua dong » chua dong, cua cong, cua dang
qua dung » quang dung, su dung, qua song
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: 30 trieu tinh - hanh sinh ((((cua dung) or (cua dong))) or (qua dung)) duong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: 30 trieu tinh - hanh sinh ((((cua dung) OR (cua dong))) OR (qua dung)) duong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - hanh sinh ((((cua dung) or (cua dong))) or (qua dung)) duong manh toan cau*.