Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thai cua » than cua, tai cuc, tri cua
hieu van » hieu va, thien van, lieu va
xuc ban » duc ban, cuc ban, quoc ban
vai cua » dai cua, hai cua, lai cua
van lam » van nam
lam xuc » cam xuc, lam duoc
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
su xac » pu xac, su cac

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: su xac ((ky lang) OR (ky tang)) xa hoi. hieu van lam xuc ban thanh ((vai cua) OR (thai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su xac ((ky lang) OR (ky tang)) xa hoi. hieu van lam xuc ban thanh ((vai cua) or (thai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su xac ((ky lang) OR (ky tang)) xa hoi. hieu van lam xuc ban thanh ((vai cua) or (thai cua)) tre*.