Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
xang cho » sang cho, hang cho, tang cho
ban hanh » ban hang
sach ty » sach y, sach tu, xach tay
cho hoc » co hoc, khoa hoc
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
luc ban » duc ban, cuc ban, luc bat
cua cau » cua cac, cua chu, cua cay
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach thu)) xang cho hoc. hieu ve cac luc ban hanh vi cua cau~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach thu)) xang cho hoc. hieu ve cac luc ban hanh vi cua cau*.