Perhaps you should try some spelling variations:
thien chinh » tien thinh, thien chien, thi chinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
hach toan » thanh toan, manh toan
cua bang » chua bang, cua ban, cua dang
tac toan » tap toan, tam toan, tich toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thien chinh sach - hanh tranh cua bang cong ((tac toan) or (hach toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien chinh sach - hanh tranh cua bang cong ((tac toan) OR (hach toan)) cau.
• Adding a wildcard symbol may retrieve word variants: thien chinh sach - hanh tranh cua bang cong ((tac toan) or (hach toan)) cau*.