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, ho chieu
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
luan hoan » luan van
vat hang » van hang, dat hang, va hang
van phan » van phong, van thanh, luan phan

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 vat hang cong ((van phan) or (luan hoan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh trinh vat hang cong ((van phan) OR (luan hoan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh trinh vat hang cong ((van phan) or (luan hoan)) cau*.