Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, cong tan
luat dung » suat dung, luat chung, thuat dung
dung cong » dung trong
thanh hoa » thanh pho
hoa ban » hoa dan, hoa van, hoa han

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 sach)) - hanh trinh luat dung cong thanh hoa ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh trinh luat dung cong thanh hoa ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hanh trinh luat dung cong thanh hoa ban*.