Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau treo
van anh » van thanh, tuan anh, van minh
soc van » hoc van, oc van, sac van
nang xa » nang x, lang xa, nang ma
hieu vu » hieu ve, hieu su, dieu vu
sac ky » cac ky, sai ky
anh ve » hanh ve, anh va, anh viet
tu sac » tu sach, tu cac, tu san

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: tu sac ky nang xa hoi. ((hieu vu) OR (hieu va)) cham soc van anh ve ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. ((hieu vu) OR (hieu va)) cham soc van anh ve ((cuu tre) or (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu vu) OR (hieu va)) cham soc van anh ve ((cuu tre) or (cau tren))*.