Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh nang » thanh hang, thanh hoang, thanh giang
thang long » thanh cong
hoc chieu » hoc thieu, ho chieu, hoc hien
nang quan » ban quan, nang suat
dang cong » dung cong
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - thanh nang quan ((dang cong) or (thang long)) dan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thanh nang quan ((dang cong) OR (thang long)) dan thanh lap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh nang quan ((dang cong) or (thang long)) dan thanh lap*.