Perhaps you should try some spelling variations:
nhanh trinh » nhanh tinh, thanh trinh, nhanh thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
cong cac » cuong cac, cong tac, cong cau
chat cac » chat cam, chat cao, cho cac
cong co » dong co, cong cu, cong so

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 - ((hanh trinh) or (nhanh trinh)) chat ngung ((cong co) or (cong cac)) chat cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - ((hanh trinh) OR (nhanh trinh)) chat ngung ((cong co) OR (cong cac)) chat cac.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - ((hanh trinh) or (nhanh trinh)) chat ngung ((cong co) or (cong cac)) chat cac*.