Perhaps you should try some spelling variations:
nang chon » nang cao, nang hoc, sang cho
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
ban hanh » ban hang
nang cho » ngang cho, nang cao, sang cho
tai cua » thai cua, tai cuc, tri cua
xuc ban » duc ban, cuc ban, quoc ban
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
sach ty » sach tu, sach thu, xach tay
cua tre » cua te, cuu tre, cua triet

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 ty) or (sach y)) ((nang cho) or (nang chon)) hoc. hieu van cac xuc ban hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) ((nang cho) OR (nang chon)) hoc. hieu van cac xuc ban hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) ((nang cho) or (nang chon)) hoc. hieu van cac xuc ban hanh tai cua tre*.