Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sach va » sach xa, sach ha, sach dao
sach v » sach y, sach 2, sach vay
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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) or (sach va)) nang x hoi. ((hieu ve) or (lieu va)) cam duc van thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach va)) nang x hoi. ((hieu ve) OR (lieu va)) cam duc van thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach va)) nang x hoi. ((hieu ve) or (lieu va)) cam duc van thanh vi cua tre*.