Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
hieu van » hieu va, thien van, lieu va
cam luc » cam xuc, cau luc
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu va
sach ky » sach y, sach ty, sach kem
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
cua te » cua tu
sac ky » cac ky, sai ky

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ky) OR (sac ky)) sang lap hai. ((hieu ve) OR (hieu van)) cam luc va danh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ky) OR (sac ky)) sang lap hai. ((hieu ve) or (hieu van)) cam luc va danh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: so ((sach ky) OR (sac ky)) sang lap hai. ((hieu ve) or (hieu van)) cam luc va danh vi cua te*.