Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
pham huu » pham duc, pham duy, phan huy
chat xuc » cam xuc, chao xu, chat cua
sach tu » sach thu, cach tu, sach ty
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
vi cua » vai cua, di cua

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 tu nang xa hoi. hieu va ((chat xuc) or (((chat huu) OR (pham huu)))) van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tu nang xa hoi. hieu va ((chat xuc) OR (((chat huu) OR (pham huu)))) van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach tu nang xa hoi. hieu va ((chat xuc) or (((chat huu) OR (pham huu)))) van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach tu nang xa hoi. hieu va ((chat xuc) or (((chat huu) OR (pham huu)))) van hanh vi cua tre*.