Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuong van » truong van, thuong va, thuong han
doi chieu » doc hieu, doi chi, ho chieu
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua thong » cua thuong, cua khong, cua tong
thong van » trong van, thong va, thong quan
sinh cua » manh cua, dinh cuu, sinh va
tay cao » tao cao, tay co, toan cao

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: doi chieu sach - hanh sinh cua thong ((thuong van) OR (thong van)) tay cao~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh sinh cua thong ((thuong van) or (thong van)) tay cao*.