Perhaps you should try some spelling variations:
truong doi » truong dai, trong doi, truong hoi
xa truong » cac truong
so sach » so sanh, bo sach, co sach
ty nang » ty xang, ty hang, ly nang
hieu va » lieu va, hieu qua
cam tuc » cam tu, nam thuc, dam thuc
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
x hoi » xa hoi, o hoi, x ho

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: so sach ((ty nang) OR (ky nang)) x hoi. hieu va ((cam tuc) OR (cam xuc)) xa truong doi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ty nang) or (ky nang)) x hoi. hieu va ((cam tuc) OR (cam xuc)) xa truong doi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: so sach ((ty nang) or (ky nang)) x hoi. hieu va ((cam tuc) OR (cam xuc)) xa truong doi cuu tre*.