Perhaps you should try some spelling variations:
thanh loi » thanh hoa, thanh hai, thanh lap
hieu van » hieu va, thien van, lieu va
xuc manh » suc manh, duc manh, duc minh
tu sach » thu sach, su sach, te sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach vu nang xa hoi. hieu van cam xuc manh ((thanh loi) or (dung tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu nang xa hoi. hieu van cam xuc manh ((thanh loi) OR (dung tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach vu nang xa hoi. hieu van cam xuc manh ((thanh loi) or (dung tai)) cua tre*.