Perhaps you should try some spelling variations:
chai tinh » chau tinh, thai tinh, cham tinh
doi chai » doi chi, doi thoai, doi cua
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
va hang » van hang, va nang, va hanh
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chai tinh - canh tranh ((va hang) or (va lang)) cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chai tinh - canh tranh ((va hang) OR (va lang)) cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chai tinh - canh tranh ((va hang) or (va lang)) cong san toan cau*.