Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach ty » sach y, sach tu, sach thu
hanh de » hanh ve, hanh kem
xanh di » danh di, vanh dai, xanh tai
cua tre » cua te, cuu tre, cua triet
thu vat » thuc vat, thuat vat, thu nhat
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
thu va » thuc va, thue va, tu va

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 xa hoi. hieu va cac ((thu vat) OR (thu va)) ((xanh di) OR (hanh de)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang xa hoi. hieu va cac ((thu vat) OR (thu va)) ((xanh di) or (hanh de)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. hieu va cac ((thu vat) OR (thu va)) ((xanh di) or (hanh de)) cua tre*.