Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
toc chieu » toc thieu, doc hieu, hoc thieu
thanh tra » thanh toan, thanh hoa
tra quang » tran quang, tra quan, tri quang
dung cong » dung trong
trinh van » trinh han, trinh quan, trinh toan
van chat » cao chat

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

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