Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
nhung van » phung van, nhung bai, nhung cau
manh toan » thanh toan, anh tuan, tinh toan
kho danh » khao danh, khop danh, kho canh
toan tap » toan ban
doi kho » doi khi, doi pho, dai kho

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi kho danh - hanh tranh cua ((nhung van) or (dung trong)) manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi kho danh - hanh tranh cua ((nhung van) OR (dung trong)) manh toan tap.
• Adding a wildcard symbol may retrieve word variants: doi kho danh - hanh tranh cua ((nhung van) or (dung trong)) manh toan tap*.