Perhaps you should try some spelling variations:
su sach » vu sach
so sach » so sanh, bo sach, co sach
ty nang » ty xang, ty hang, ly nang
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
va cau » van cau, va cac, va dau
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: ((su sach) or (so sach)) ((ty nang) OR (ky nang)) xa hoi. lieu va cau truc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ((ty nang) OR (ky nang)) xa hoi. lieu va cau truc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ((ty nang) OR (ky nang)) xa hoi. lieu va cau truc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ((ty nang) OR (ky nang)) xa hoi. lieu va cau truc va hanh vi cua tre*.