Perhaps you should try some spelling variations:
xang cho » sang cho, hang cho, tang cho
hieu van » hieu va, thien van, lieu va
ban hanh » ban hang
te sach » toc sach
sach ty » sach y, sach tu, sach thu
cho hoc » co hoc, khoa hoc
van cac » van hac, van cau, van bac
cac luc » cau luc, coc luc, cac nuoc
luc ban » duc ban, cuc ban, luc bat
cua cau » cua cac, cua chu, cua can
cua cay » cua cac

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 xang cho hoc. hieu van cac luc ban hanh vi ((cua cau) OR (cua cay))~".
• Adding a wildcard symbol may retrieve word variants: te sach ty xang cho hoc. hieu van cac luc ban hanh vi ((cua cau) OR (cua cay))*.