Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
doi chieu » doc hieu, doi chi, mot chieu
khoan tap » khoa tap, khoan tai, toan tap
trinh va » trinh van, trinh vat, trinh ve
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 xanh - canh trinh va dung trong cac khoan tap~.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh trinh va dung trong cac khoan tap*.