Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
nam xuc » cam xuc, nam xua, nam thuc
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac
su xac » pu xac, su cac
xuc va » duc va, tuc va, luc va
x hoi » o hoi, x ho, 5 hoi

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