Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
nam thuc » nam thuoc, am thuc, nam thu
vu sach » vu bach, su sach, vu khach
hieu va » hieu qua
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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: vu sach v nang x hoi. ((hieu ve) OR (((hieu va) OR (lieu va)))) nam thuc van hanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach v nang x hoi. ((hieu ve) or (((hieu va) OR (lieu va)))) nam thuc van hanh di cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach v nang x hoi. ((hieu ve) or (((hieu va) OR (lieu va)))) nam thuc van hanh di cua tre*.