Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, va tinh, le thanh
phan cua » nhan cua, than cua, phat cua
ky tang » ky dang, kho tang, ky trong
van lam » van nam
lam xuc » cam xuc, lam duoc
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ((ky tang) or (ky nang)) xa hoi. hieu van lam xuc ((va thanh) OR (ban thanh)) phan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (ky nang)) xa hoi. hieu van lam xuc ((va thanh) OR (ban thanh)) phan cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) or (ky nang)) xa hoi. hieu van lam xuc ((va thanh) OR (ban thanh)) phan cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (ky nang)) xa hoi. hieu van lam xuc ((va thanh) OR (ban thanh)) phan cua tre*.