Perhaps you should try some spelling variations:
thuoc va » thuc va, thuong va, thuoc tai
thuoc ma » hoc ma, duoc ma
hieu van » hieu va, thien van, lieu va
dinh ba » dinh gia, dinh van, dinh lam
te sach » toc sach
van lam » van nam
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
cua tre » cua te, cuu tre, cua triet
ba cua » ban cua, bai cua, bao cua

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 ((ky lang) OR (ky tang)) xa hoi. hieu van lam ((thuoc va) OR (thuoc ma)) dinh ba cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) OR (ky tang)) xa hoi. hieu van lam ((thuoc va) or (thuoc ma)) dinh ba cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) OR (ky tang)) xa hoi. hieu van lam ((thuoc va) or (thuoc ma)) dinh ba cua tre*.