Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
va danh » va dinh, va dan, va hanh
ky sang » ky nang, ky tang, duy sang
ky dang » ky nang, ky danh
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu va
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua
cua te » cua tu
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: tu sach ((ky sang) or (ky dang)) lap hai. ((hieu ve) OR (hieu van)) cam xuc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky sang) OR (ky dang)) lap hai. ((hieu ve) OR (hieu van)) cam xuc va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) or (ky dang)) lap hai. ((hieu ve) OR (hieu van)) cam xuc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) or (ky dang)) lap hai. ((hieu ve) OR (hieu van)) cam xuc va danh vi cua te*.