Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
su sach » so sach
va danh » va dinh, va dan, va hanh
cac luc » cau luc, coc luc, cac nuoc
hieu ve » hieu va, hieu van
lap hai » lap tai, lap lai, lap hoat
ky sang » ky nang, ky dang, ky tang
vu sach » vu bach, vu khach
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

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