Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
va tinh » may tinh
va hanh » van hanh, va thanh, va danh
sach ly » sach y, sach lo, sach ty
cac suc » cao suc, cac nuoc, cac cuoc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
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 ly nang xa hoi. ((hieu ve) or (hieu va)) cac suc ((va hanh) or (va tinh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang xa hoi. ((hieu ve) OR (hieu va)) cac suc ((va hanh) OR (va tinh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ly nang xa hoi. ((hieu ve) or (hieu va)) cac suc ((va hanh) or (va tinh)) di cua tre*.