Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
cua viet » ca viet, hoa viet, cua vat
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
5 hoi » o hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((5 hoi) or (x ho)). hieu vu cham xuc van hanh vi ((cua tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((5 hoi) OR (x ho)). hieu vu cham xuc van hanh vi ((cua tre) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((5 hoi) or (x ho)). hieu vu cham xuc van hanh vi ((cua tre) or (cua viet))*.