Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
va thanh » gia thanh, ban thanh, va tinh
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
dai hoi » dai hoc, dai hai, dai moi
va tham » van tham, va cham, va thuat
xuc van » duc van, luc van, vuc van
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang dai hoi. hieu ((va tham) or (va thanh)) xuc van hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang dai hoi. hieu ((va tham) OR (va thanh)) xuc van hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang dai hoi. hieu ((va tham) or (va thanh)) xuc van hanh di cua tre*.