Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
xa hanh » xa thanh, xa khanh, va hanh
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang
cuu tre » cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, v nang, may nang
va cam » va cham, va cac, va cao
xuc xa » tuc xa, buc xa

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

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