Perhaps you should try some spelling variations:
doi chieu » doc hieu, ho chieu, mot chieu
canh hanh » xanh hanh, canh tranh, danh thanh
dung cong » dung trong
cong san » cong tac
phan cau » phan dau, phan cac, phan tu
phan lap » phan dau
doi chi » doi khi
hanh va » hang va, hanh vi
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: ((doi chieu) or (doi chi)) xanh - canh hanh va dung cong san ((phan cau) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) xanh - canh hanh va dung cong san ((phan cau) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) xanh - canh hanh va dung cong san ((phan cau) or (phan lap))*.