Perhaps you should try some spelling variations:
thai thuy » thi thuy, thanh thuy, thuat thuy
toc sach » hoc sach, doc sach, thuoc sach
dinh dai » dinh dat, sinh dai, dinh dao
tham tuc » tham thuc, thai tuc, nham thuc
xa dinh » xac dinh, va dinh, ba dinh
sach ty » sach y, sach tu, sach thu
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
cua tre » cua te, cuu tre, cua triet
ma hoi » xa hoi, ma hoa, me hoi

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 ty nang ((ma hoi) OR (mai hoi)). lieu va ((tham tuc) OR (thai thuy)) xa dinh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang ((ma hoi) OR (mai hoi)). lieu va ((tham tuc) or (thai thuy)) xa dinh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang ((ma hoi) OR (mai hoi)). lieu va ((tham tuc) or (thai thuy)) xa dinh dai cua tre*.