Perhaps you should try some spelling variations:
thang long » thanh cong
long thuoc » luong thuoc, dong thuoc, khong thuoc
thuoc dang » thuoc dung, thuoc khang, thuc dan
doi chieu » doc hieu, doi chi, mot chieu
dang cong » dung cong
cong phap » chong phap, cong phan, cong pham
phap phan » phap phat, phap hoan, phap luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sach - thang long thuoc dang cong phap phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - thang long thuoc dang cong phap phan tu.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - thang long thuoc dang cong phap phan tu*.