Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
te sach » toc sach
danh vi » hanh vi, dinh vi, danh di
thuc va » thuc dan, thuc day
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v nang xa hoi. ((hieu van) or (hieu va)) chat ((thuc vat) or (thuc va)) danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang xa hoi. ((hieu van) OR (hieu va)) chat ((thuc vat) OR (thuc va)) danh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach v nang xa hoi. ((hieu van) or (hieu va)) chat ((thuc vat) or (thuc va)) danh vi cua tre*.