Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
ky sang » ky nang, ky dang, ky tang
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
luc va » tuc va, loc va
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua
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 lap hai. hieu ve cac ((luc va) or (duc va)) dan vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky sang lap hai. hieu ve cac ((luc va) OR (duc va)) dan vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sac ky sang lap hai. hieu ve cac ((luc va) or (duc va)) dan vi cua te*.