Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
y nang » ky nang, v nang, may nang
di cua » dai cua, doi cua, de 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) or (thu sach)) ((y nang) OR (ly nang)) xa hoi. hieu va cam xuc va hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ((y nang) OR (ly nang)) xa hoi. hieu va cam xuc va hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ((y nang) OR (ly nang)) xa hoi. hieu va cam xuc va hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ((y nang) OR (ly nang)) xa hoi. hieu va cam xuc va hanh di cua tre*.