Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
van nhan » danh nhan, van khanh, van khang
van phan » van phong, luan phan, van ban
thanh vi » hanh vi, thanh va, thanh ve
vuc nang » cuc nang, chuc nang, van nang
luc van » luoc van, luu van, duc van
te sach » toc sach
vu nang » va nang, vu dang, v nang
cua tre » cua te, cuu tre, cua triet
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 ((vu nang) OR (vuc nang)) co hoc. hieu ((van nhan) or (van phan)) luc van thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((vu nang) OR (vuc nang)) co hoc. hieu ((van nhan) OR (van phan)) luc van thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((vu nang) OR (vuc nang)) co hoc. hieu ((van nhan) or (van phan)) luc van thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((vu nang) OR (vuc nang)) co hoc. hieu ((van nhan) or (van phan)) luc van thanh vi cua tre*.