Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
danh vi » dinh vi, danh di, danh va
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
va cam » va cham, va cac, va cai
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, xa hoi, ma hoa
va cao » va cac, va co, va dao

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 y nang ma hoi. hieu ((va cam) or (va cao)) tuc va ((danh vi) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu ((va cam) OR (va cao)) tuc va ((danh vi) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu ((va cam) or (va cao)) tuc va ((danh vi) or (hanh vi)) cua tre*.