Perhaps you should try some spelling variations:
hieu phan » phieu phan, lieu phan, hieu pham
phan dau » phan tu, hang dau
te sach » toc sach
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
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 ((ky nang) or (v nang)) xa hoi. hieu phan dau ((xuc van) OR (duc van)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky nang) OR (v nang)) xa hoi. hieu phan dau ((xuc van) OR (duc van)) hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky nang) or (v nang)) xa hoi. hieu phan dau ((xuc van) OR (duc van)) hanh vi cua tre*".