Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
hanh vai » hanh vi, hanh va, hanh tai
hieu ve » hieu van
va hanh » van hanh, va thanh, va danh
dai hoi » dai hoc, dai hai, dai moi
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
so sac » so sach, so dac
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang dai hoi. ((hieu va) or (hieu ve)) cam xuc va hanh vai ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky nang dai hoi. ((hieu va) OR (hieu ve)) cam xuc va hanh vai ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: so sac ky nang dai hoi. ((hieu va) or (hieu ve)) cam xuc va hanh vai ((cua tre) or (cua tu))*.