Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh dai » thanh hai, thanh tai, thanh dat
sach thi » sach thu, sach thieu, sach tham
sach tai » sach tham, sach dao, sach xa
sach bai » sach dao, cac bai, sach xa
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
xuc ban » duc ban, cuc ban, quoc ban
dai hoa » dai khoa, dai hoc, dai hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach thi) or (((sach tai) OR (sach bai)))) hang xa hoi. hieu va cac xuc ban thanh dai hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thi) OR (((sach tai) OR (sach bai)))) hang xa hoi. hieu va cac xuc ban thanh dai hoa viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thi) or (((sach tai) OR (sach bai)))) hang xa hoi. hieu va cac xuc ban thanh dai hoa viet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thi) or (((sach tai) OR (sach bai)))) hang xa hoi. hieu va cac xuc ban thanh dai hoa viet*.