Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
dang xay » dang van, van xay
van nham » van nam, van nhan, van tham
vai cua » dai cua, hai cua, lai cua
sach ty » sach y, sach thu, xach tay
xay hoi » xa hoi, tay hoi, cay phoi
sach tu » sach thu, cach tu, sach uu
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 tu)) dang xay hoi. hieu van nham thuc dan hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) dang xay hoi. hieu van nham thuc dan hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) dang xay hoi. hieu van nham thuc dan hanh vai cua tre*.