Perhaps you should try some spelling variations:
chieu xanh » chieu tinh, hieu manh
chieu sang » hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, hieu cach
nung giang » huong giang, hong giang, ninh giang
hanh nung » hanh nhung, hanh dung, hanh tung
giang van » hoang van, dang van, gian dan
cong vinh » cong trinh, trong vinh, cong viec
vinh toan » tinh toan, hinh toan, minh toan
van cong » van dong, van phong, phan cong
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chieu xanh) or (chieu sang))) or (chieu sach)) - hanh nung giang van cong vinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu xanh) OR (chieu sang))) OR (chieu sach)) - hanh nung giang van cong vinh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu xanh) or (chieu sang))) or (chieu sach)) - hanh nung giang van cong vinh toan ban*.