Perhaps you should try some spelling variations:
ban danh » ban doanh, ban hanh, ban dan
ban banh » ban hanh, ban anh, ban thanh
tu sach » thu sach, su sach, te sach
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
ve cham » va cham, vu cham, ve chim
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
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: tu sach ky nang xa hoi. hieu ((ve cham) or (ve chat)) xuc ((ban banh) or (ban danh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((ve cham) OR (ve chat)) xuc ((ban banh) OR (ban danh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu ((ve cham) or (ve chat)) xuc ((ban banh) or (ban danh)) vi cua tre*.