Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
ky sang » ky nang, ky dang, ky tang
lap hai » lap tai, lap lai, lap hoat
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
ve cau » va cau, ve cac, le cau
ke cau » ket cau
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: ((so sach) or (so sanh)) ky sang lap hai. hieu ((ve cau) OR (ke cau)) luc va danh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) ky sang lap hai. hieu ((ve cau) OR (ke cau)) luc va danh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) ky sang lap hai. hieu ((ve cau) OR (ke cau)) luc va danh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) ky sang lap hai. hieu ((ve cau) OR (ke cau)) luc va danh vi cua tu*.