Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
nang cong » nang song, dang cong, bang cong
trinh ve » trinh he, trinh va, trinh vi
cong san » cong tac
ve nang » va nang, ke nang, de 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: hoc chieu xanh - hanh trinh ve nang cong san ((toan ban) OR (van ban))~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh trinh ve nang cong san ((toan ban) or (van ban))*.