Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
cong ban » cong bang, cong san, cong tan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
doi chi » doi khi
va dung » van dung, va duong, vat dung

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

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