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 thong » luat thuong, suat thong, xuat thong
thong danh » thong dan, thong lanh, trong danh
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh tu » hanh tu, nhanh tu, thanh tung

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

• Performing a fuzzy search may retrieve terms with similar spellings: cao ((chieu sach) or (chieu xanh)) - hanh trinh luat thong thong danh thanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cao ((chieu sach) OR (chieu xanh)) - hanh trinh luat thong thong danh thanh tu*.