Perhaps you should try some spelling variations:
sang tai » hang tai, sang tao, tang tai
hieu van » hieu va, thien van, lieu va
dan lap » phan lap, dan luan
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
hieu ve » hieu va
cam luc » cam xuc, cau luc
su sac » su sach, su cac, su xac
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: su sac ky ((dan lap) OR (sang tai)) 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: "su sac ky ((dan lap) or (sang tai)) hai. ((hieu ve) OR (hieu van)) cam luc va danh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((dan lap) or (sang tai)) hai. ((hieu ve) OR (hieu van)) cam luc va danh vi cua te*.