Perhaps you should try some spelling variations:
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
ma hoi » mai hoi, xa hoi, ma hoa
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 y nang ma hoi. hieu ((((ve cac) or (va cam))) or (va cao)) thuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. hieu ((((ve cac) OR (va cam))) OR (va cao)) thuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. hieu ((((ve cac) or (va cam))) or (va cao)) thuc va hanh vi cua tre*.