Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam tuc » cam tu, nam thuc, dam thuc
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
va dau » va dao
dau du » dau tu, day du, dao du

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: toc sach y nang xa hoi. hieu va ((cam tuc) OR (cam xuc)) va dau du ((cuu tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. hieu va ((cam tuc) OR (cam xuc)) va dau du ((cuu tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. hieu va ((cam tuc) OR (cam xuc)) va dau du ((cuu tre) or (cua triet))*.