Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh dang » hanh dong, anh dang, hanh dung
dang cong » dung cong
dang van » hoang van, hang va
van dang » van dong, van dung, van nang
cong van » cong vang, cong san, song van
van phan » van phong, van thanh, luan phan
phan che » han che, phap che, phan thi
hieu ca » hieu cac, hieu cua, hieu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu ca) or (chieu sach)) - hanh dang van dang cong van phan che~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((hieu ca) OR (chieu sach)) - hanh dang van dang cong van phan che*.