Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
hoc tran » hoc tan, hoc tren, boc tran
cua hang » cua dang, cua nhung, cua cong
tan toan » tan tran, tap toan, dan toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tran thanh - hanh tranh cua hang cong ((tan toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tran thanh - hanh tranh cua hang cong ((tan toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc tran thanh - hanh tranh cua hang cong ((tan toan) or (van toan)) cau*.