Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
hanh tai » thanh tai, hang tai, han tai
hanh vii » hanh voi, hanh va, hanh noi
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
sach lo » sach dao, sach doi, sach hoi
nang xa » nang x, lang xa, nang ma
lo nang » ho nang, ly nang, loai nang
cua tre » cua te, cuu tre, cua triet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach lo nang xa hoi. hieu van pham thuc va ((((hanh vii) OR (hanh tai))) OR (hanh vi)) cua tre~.
• Adding a wildcard symbol may retrieve word variants: tu sach lo nang xa hoi. hieu van pham thuc va ((((hanh vii) or (hanh tai))) or (hanh vi)) cua tre*.