Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam luc » cau luc
va dinh » van dinh, va kinh, va tinh
dinh du » dinh duc, dinh cu, dinh tu
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
du cuu » tu cuu

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 y nang xa hoi. hieu va ((cam luc) OR (cam xuc)) va dinh du cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y nang xa hoi. hieu va ((cam luc) OR (cam xuc)) va dinh du cuu tre".
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. hieu va ((cam luc) OR (cam xuc)) va dinh du cuu tre*.