Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cong cong » cong dong, trong cong, dung cong
dang cong » dung cong
hach toan » thanh toan, manh toan
hoi hieu » hoi phieu, hoi tieu, moi hieu
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: hoi hieu lang - canh tranh cua ((cong cong) or (dang cong)) hach toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - canh tranh cua ((cong cong) OR (dang cong)) hach toan cau.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - canh tranh cua ((cong cong) or (dang cong)) hach toan cau*.