Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, ve cai
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao

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