Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh vat, trinh ve
cong tac » cong ty
va dung » van dung, va duong, vat dung
chai tu » cai tu, choi tu, chay tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - canh trinh va dung cong tac ((chai tu) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - canh trinh va dung cong tac ((chai tu) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh trinh va dung cong tac ((chai tu) or (phan tu))*.