Perhaps you should try some spelling variations:
truong doi » truong dai, trong doi, truong hoi
cua triet » cua viet, su triet, va triet
xa truong » cac truong
cua tre » cua te, cuu tre, dua tren
cam tuc » cam xuc, cam tu, nam thuc
so sach » so sanh, co sach, hoc sach
ty nang » ky nang, ty xang, ty hang
bo sach » co sach, hoc sach
hieu va » lieu va, hieu qua
va cam » va cham, va cac, va cao
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) OR (bo sach)) ty nang x hoi. hieu va cam tuc xa truong doi ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ty nang x hoi. hieu va cam tuc xa truong doi ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ty nang x hoi. hieu va cam tuc xa truong doi ((cua tre) or (cua triet))*.