Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban hanh » ban hang
cua tre » cua te, cua triet, dua tren
hanh va » hang va, hanh vi
xuc ban » duc ban, cuc ban, quoc ban
lam xuc » cam xuc, lam duoc
hieu va » lieu va, hieu qua
cuu tre » cau tren, cau treo
va lam » van lam, va lap
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((y nang) or (v nang)) xa hoi. hieu va lam xuc ban hanh va ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((y nang) OR (v nang)) xa hoi. hieu va lam xuc ban hanh va ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: thu sach ((y nang) or (v nang)) xa hoi. hieu va lam xuc ban hanh va ((cua tre) or (cuu tre))*.