Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
trang cua » tranh cua, tang cua, trung cua
cua thong » cua thuong, cua khong, cua tong
hach toan » thanh toan
manh toan » thanh toan, anh tuan, tinh toan
30 trieu » 25 trieu
tac toan » tap toan, tam toan, tich toan

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: 30 trieu tinh - hanh trang cua thong cong ((tac toan) OR (((hach toan) OR (manh toan)))) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "30 trieu tinh - hanh trang cua thong cong ((tac toan) or (((hach toan) OR (manh toan)))) cau~".
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - hanh trang cua thong cong ((tac toan) or (((hach toan) OR (manh toan)))) cau*.