Perhaps you should try some spelling variations:
thang long » thanh cong
long thuoc » luong thuoc, dong thuoc, khong thuoc
thuoc dung » hoc dung, thuy dung
cong quang » luong quang, thong quang, duong quang
quang phan » quang chan, quang phat, quang thanh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu

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

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