Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
hanh trinh » canh tranh, hanh chinh
luat khung » luat chung, luat thuong, luan chung
khung cong » nhung cong, khung long, phung cong
cong tinh » cong trinh, cong vinh, long tinh
toan ban » van ban

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 sach) OR (chieu xanh)) - hanh trinh luat khung cong tinh toan ban~.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu xanh)) - hanh trinh luat khung cong tinh toan ban*.