Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van nham » van nam, van nhan, van tham
thuc day » thuc dan, thuc vat
hanh lam » thanh lap, hanh kem, dinh lam
te sach » toc sach
hanh va » hang va, hanh vi
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan
sach ty » sach y, sach tu, sach thu
cua te » cua tu

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: te sach ty nang xa hoi. hieu van nham ((thuc va) OR (thuc day)) ((hanh lam) OR (hanh va)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu van nham ((thuc va) OR (thuc day)) ((hanh lam) or (hanh va)) cua te~".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu van nham ((thuc va) OR (thuc day)) ((hanh lam) or (hanh va)) cua te*.