Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
cam duc » cao duc, pham duc, nam duoc
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua cu

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: vu sach y nang xa hoi. hieu qua ((cam duc) OR (cam xuc)) van hanh vi ((cua tre) OR (cua tu))~.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. hieu qua ((cam duc) or (cam xuc)) van hanh vi ((cua tre) or (cua tu))*.