Perhaps you should try some spelling variations:
vu thanh » su thanh, vu khanh, cuu thanh
nang lai » nang tai, mang lai, nang cai
su sach » so sach, vu sach
hai cua » thai cua, dai cua, hoi cua
va danh » va dinh, va hanh, dia danh
van cau » van dau, van hau, van chat
thi van » thi lan, thi hanh, thi nang
lai hoi » dai hoi, lai hoa, lai roi
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vu thanh)) ky nang lai hoi. thi van cau truc ((va danh) or (va dan)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu thanh)) ky nang lai hoi. thi van cau truc ((va danh) OR (va dan)) hai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu thanh)) ky nang lai hoi. thi van cau truc ((va danh) or (va dan)) hai cua tre*.