Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
vai cuu » vai cua
va hanh » va thanh, va danh, ban hanh
tu sach » thu sach, su sach, te sach
ve chat » va chat, van chat
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
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 y nang x hoi. hieu ((va cam) or (ve chat)) tuc ((van hanh) or (va hanh)) vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((va cam) OR (ve chat)) tuc ((van hanh) OR (va hanh)) vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((va cam) or (ve chat)) tuc ((van hanh) or (va hanh)) vai cuu tre*.