Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tri » thanh tra, thanh tai, chinh tri
dung cong » dung trong
cong hung » cong chung, cong huong, cong dung
tri dung » trai dung, thi dung, tri ung
hung dan » huong dan, dung dan, tung dan
dan phan » doan phan, dan chan, van phan
phan lap » phan dau
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: doc ((chieu sach) OR (hieu ca)) - thanh tri dung cong hung dan phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sach) OR (hieu ca)) - thanh tri dung cong hung dan phan lap*".