Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dong hoa » dong hoc, dong co
hieu thi » sieu thi, hieu chi, hiep thi
thanh va » thanh van, hanh va, thanh ha
chua tre » chua tri, cua tre, chua trieu
sach ty » sach tu, sach thu, xach tay
hoa hoi » khoa hoi, hoa hoc, hoa doi
thi hai » thi mai, thi hanh
hai cuc » tai cuc, hai cua, thai cua
cuc ban » cua ban, cac ban, cuu ban
va chua » vua chua, ca chua, va chu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so ((sach ty) OR (sach y)) dong hoa hoi. hieu thi hai cuc ban thanh va chua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ty) OR (sach y)) dong hoa hoi. hieu thi hai cuc ban thanh va chua tre".
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) OR (sach y)) dong hoa hoi. hieu thi hai cuc ban thanh va chua tre*.