Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh toan » tinh toan, thanh toan, trinh han
chau tinh » cuu tinh, ha tinh, cua tinh
toan hang » toan thang, toan hanh, toan mang
hang nong » thang long, han tong
nong dan » cong dan, nong san, nguong dan
toan cao » toan tap
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 ((chau tinh) OR (chieu sach)) - hanh trinh toan hang nong dan ((toan cao) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) or (chieu sach)) - hanh trinh toan hang nong dan ((toan cao) or (toan ban))*.