Perhaps you should try some spelling variations:
nang lai » nang tai, mang lai, nang cai
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va kinh » va tinh, qua kinh
cua tre » cua te, cuu tre, cua triet
lai roi » lai hoi, loi roi
hieu va » lieu va, hieu qua
va dan » ca dan, va dao, va dau
ca cua » co cua

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 ky nang lai roi. hieu va ((cac nuoc) or (cam xuc)) ((va dan) or (va kinh)) ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang lai roi. hieu va ((cac nuoc) OR (cam xuc)) ((va dan) OR (va kinh)) ca cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang lai roi. hieu va ((cac nuoc) or (cam xuc)) ((va dan) or (va kinh)) ca cua tre*.