Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
so sach » so sanh, bo sach, co sach
va danh » va dinh, va dan, va hanh
ky sang » ky nang, ky dang, ky tang
lap hai » lap tai, lap lai, lap hoat
vai cua » dai cua, hai cua, lai cua
sach ky » sac ky, sach y, sach ty
vi cua » di cua
luc va » duc va, tuc va, loc va
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky sang lap hai. hieu ((ve cam) OR (ve cac)) luc va danh ((vi cua) or (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang lap hai. hieu ((ve cam) OR (ve cac)) luc va danh ((vi cua) OR (vai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky sang lap hai. hieu ((ve cam) OR (ve cac)) luc va danh ((vi cua) or (vai cua)) te".
• Adding a wildcard symbol may retrieve word variants: so sach ky sang lap hai. hieu ((ve cam) OR (ve cac)) luc va danh ((vi cua) or (vai cua)) te*.