Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cac xuc » cam xuc, cac nuoc, chat xuc
cuu tre » cua tre, cau treo
va cau » van cau, va cao, va cai
va dau » va dao

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 sach ky nang xa hoi. lieu va cac xuc ((va cau) OR (va dau)) thi ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. lieu va cac xuc ((va cau) or (va dau)) thi ((cuu tre) OR (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu va cac xuc ((va cau) or (va dau)) thi ((cuu tre) OR (cau tren))*.