Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
va hanh » van hanh, ban hanh, dao hanh
va danh » va dinh, va dan, dia danh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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 cao hoi. hieu ((va thanh) or (ban thanh)) duc ((va hanh) OR (va danh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. hieu ((va thanh) OR (ban thanh)) duc ((va hanh) OR (va danh)) hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang cao hoi. hieu ((va thanh) or (ban thanh)) duc ((va hanh) OR (va danh)) hai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang cao hoi. hieu ((va thanh) or (ban thanh)) duc ((va hanh) OR (va danh)) hai cua tre*.