Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
van cham » van chat, van tham, va cham
te sach » toc sach
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
doc va » duoc va, duc va, loc va
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 tay lang xa hoi. hieu ((van cham) or (van thanh)) ((doc va) or (hoc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tay lang xa hoi. hieu ((van cham) OR (van thanh)) ((doc va) OR (hoc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach tay lang xa hoi. hieu ((van cham) or (van thanh)) ((doc va) or (hoc va)) hanh vi cua tre*.