Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
ky sang » ky nang, ky dang, ky tang
dinh vi » dinh ve, dinh viet, dinh tri
va dinh » van dinh, va kinh, va tinh
cam luc » cam xuc, cau luc
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
su sac » su sach, su cac, su xac
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
ta hai » tai hai, tac hai, tra hai
va hai » van hai, va chai, va khai
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky sang ((va hai) or (ta hai)). hieu ve cam luc va dinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky sang ((va hai) OR (ta hai)). hieu ve cam luc va dinh vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sac ky sang ((va hai) or (ta hai)). hieu ve cam luc va dinh vi cua te*.