Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu sach » hieu cach, dien sach, hieu cac
thanh thi » thanh tai, nhanh thi, thanh tri
cong cong » cong dong, trong cong, dung cong
cong dung » cuong dung, cong dong, cong luong
thi cong » tai cong, thien cong
dung van » duong van, dung va, dang van
van phan » van phong, van thanh, luan phan
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sach) OR (chieu sach)) - thanh thi cong cong dung van phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sach) OR (chieu sach)) - thanh thi cong cong dung van phan lap*".