Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thach gian » thach giang, thanh gian, thanh giang
thang long » thanh cong
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
gian dan » gian lang
dan phan » doan phan, dan chan, van 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: hoc chieu sach - thach gian dan ((dung cong) or (thang long)) dan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thach gian dan ((dung cong) OR (thang long)) dan phan lap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thach gian dan ((dung cong) or (thang long)) dan phan lap*.