Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thong cong » trong cong, tong cong, thong thong
cach manh » cach mang, cach nhanh, cac banh
sach danh » sach tranh, sach dao, sach dung
cua thong » cua thuong, cua khong, cua tong
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 (chiet tach)) - ((cach manh) OR (sach danh)) cua thong cong tinh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - ((cach manh) OR (sach danh)) cua thong cong tinh toan ban~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - ((cach manh) OR (sach danh)) cua thong cong tinh toan ban*.