Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thang long » thanh cong
tieu sach » dien sach, te sach, viet sach
dung cong » dung trong
cong san » cong tac
san tuan » van tuan, san luan, san quan
tuan tai » toan tai, quan tai, tan tai
long va » luong va, long van, blong va
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) or (((chieu sach) OR (chieu sang)))) - thang long va dung cong san tuan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (((chieu sach) OR (chieu sang)))) - thang long va dung cong san tuan tai*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) or (((chieu sach) OR (chieu sang)))) - thang long va dung cong san tuan tai*".