Perhaps you should try some spelling variations:
tang van » dang van, hoang van, trong van
nhan tuc » nhan thuc, nhan luc, nhanh thuc
te sach » toc sach
hieu ve » hieu va, hieu van
ve nhan » ve nha, de nhan, va nhan
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di 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 y ((nang x) OR (tang van)) hoi. hieu ve nhan tuc va hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang x) or (tang van)) hoi. hieu ve nhan tuc va hanh vi cua tre*.