Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhanh bac » nhanh ha, nhanh va
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong tan
phan lap » phan dau
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, cam nang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh cong ((va hang) OR (va nang)) cong ban ((phan lap) OR (nhanh bac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh cong ((va hang) OR (va nang)) cong ban ((phan lap) or (nhanh bac))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh cong ((va hang) OR (va nang)) cong ban ((phan lap) or (nhanh bac))*.