Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, mot chieu
trinh van » trinh han, trinh quan, trinh toan
tuan dang » tran dang, tuan bang, tuan dung
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh ((trinh van) or (tich va)) thanh cong van tuan dang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trinh van) OR (tich va)) thanh cong van tuan dang.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh van) or (tich va)) thanh cong van tuan dang*.