Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
va dinh » van dinh, va kinh, va tinh
va danh » va dan, dia danh, va thanh
va hanh » van hanh, va thanh, ban hanh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cuu tre, cua triet
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: tu sach ky lang xa hoi. hieu va cac xuc ((va hanh) or (((va danh) OR (va dinh)))) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu va cac xuc ((va hanh) OR (((va danh) OR (va dinh)))) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky lang xa hoi. hieu va cac xuc ((va hanh) or (((va danh) OR (va dinh)))) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu va cac xuc ((va hanh) or (((va danh) OR (va dinh)))) vi cua tre*.