Perhaps you should try some spelling variations:
xang cay » xanh cay, nang cao, xang dau
cay phoi » cap phoi, tay hoi, cay cho
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ty » sach y, sach tu, sach thu
van hau » van ha, van hai, van dau
hanh va » hang va
cua tre » cua te, cuu tre, cua triet
luc va » tuc va, loc va

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 xang cay phoi. hieu van hau ((luc va) OR (duc va)) ((hanh va) OR (hanh vi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty xang cay phoi. hieu van hau ((luc va) or (duc va)) ((hanh va) OR (hanh vi)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ty xang cay phoi. hieu van hau ((luc va) or (duc va)) ((hanh va) OR (hanh vi)) cua tre*.