Perhaps you should try some spelling variations:
quoc ban » quoc bao, quoc lan, quoc quan
ban benh » san benh, ba benh, ban banh
nang xa » nang x, lang xa, nang ma
van cao » van bao, van hao, van cau
benh vi » benh va, benh ve, benh li
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 xa hoi. hieu ((van cao) OR (van dao)) quoc ban benh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang xa hoi. hieu ((van cao) OR (van dao)) quoc ban benh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang xa hoi. hieu ((van cao) OR (van dao)) quoc ban benh vi cua tre*.