Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
canh sinh » canh tinh, canh binh, tinh sinh
vat hang » van hang, va hang, mat hang
dat hang » dat khanh, dat quang, tat thang
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat

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) or (chieu sang)) - canh sinh ((vat hang) OR (dat hang)) cong tac phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - canh sinh ((vat hang) OR (dat hang)) cong tac phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (chieu sang)) - canh sinh ((vat hang) OR (dat hang)) cong tac phan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sang)) - canh sinh ((vat hang) OR (dat hang)) cong tac phan tu*.