Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
vai cuu » vai cua
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ((ve cac) or (ve chat)) tuc ((van thanh) or (ban hanh)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((ve cac) OR (ve chat)) tuc ((van thanh) OR (ban hanh)) vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ((ve cac) or (ve chat)) tuc ((van thanh) or (ban hanh)) vai cuu tre*.