Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » tinh cua, trinh luat, trinh quan
dan tuan » doan tuan, van tuan, dan luan
tuan thu » toan thuc, van thu

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh trinh cua ((nhung cong) OR (thong cong)) dan tuan thu~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh trinh cua ((nhung cong) OR (thong cong)) dan tuan thu*.