Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
hieu van » hieu va, thien van, lieu va
te sach » toc sach
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va
sang ma » tang ma, nang ma, sang tao
sang xa » song xa, lang xa, mang xa
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 ky ((sang xa) or (sang ma)) hoi. ((hieu ve) OR (hieu van)) cam xuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((sang xa) OR (sang ma)) hoi. ((hieu ve) OR (hieu van)) cam xuc va hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((sang xa) or (sang ma)) hoi. ((hieu ve) OR (hieu van)) cam xuc va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((sang xa) or (sang ma)) hoi. ((hieu ve) OR (hieu van)) cam xuc va hanh dai cua tre*.