Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
danh de » hanh de, dang de, danh di
qua cao » qua cac, qua ca, qua cai
cao suc » cao su, cao duc
cua tre » cua te, cuu tre, cua triet
ty nang » ky nang, ty hang, ly nang
suc va » duc va, tuc va, luc va
dan de » dan den, dang de, van de
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: tu sach ((ty nang) OR (ty xang)) x hoi. hieu qua cao suc va ((danh de) OR (dan de)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) or (ty xang)) x hoi. hieu qua cao suc va ((danh de) OR (dan de)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty xang)) x hoi. hieu qua cao suc va ((danh de) OR (dan de)) cua tre*.