Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
ky sang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
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 ky sang lap tai. hieu ve cac luc va danh vi ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky sang lap tai. hieu ve cac luc va danh vi ((cua te) OR (cua tu))*".