Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
thong danh » thong dan, thong lanh, trong danh
danh thanh » dinh thanh, dang thanh, nhanh thanh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua thong » cua thuong, cua khong, cua tong
tinh cua » trinh cua, sinh cua, tinh chat
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 tinh cua 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 tinh cua thong thong danh thanh tu*.