Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
ty dang » ky dang, ty hang, ty dong
nam xua » nam cua, nam mua, nam qua
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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