Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
chat huu » pham huu
chat xuc » cam xuc, chao xu, chat cua
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang xa hoi. hieu ve ((chat xuc) OR (chat huu)) ban ((hanh di) or (hanh de)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang xa hoi. hieu ve ((chat xuc) OR (chat huu)) ban ((hanh 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 ve ((chat xuc) OR (chat huu)) ban ((hanh di) or (hanh de)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. hieu ve ((chat xuc) OR (chat huu)) ban ((hanh di) or (hanh de)) cua tre*.