Perhaps you should try some spelling variations:
ky sang » ky nang, ky dang, ky tang
sang ta » sang tao, sang tai, sang tac
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ta hai » tai hai, tac hai, tra hai
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
va don » va dong, va doc, va do
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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