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 va » lieu va, hieu qua
cam loc » cam lo
va dauh » va danh, va doanh
va cam » va cham, va cac, va cao
va dau » va dao
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: so sach ky sang lap tai. hieu va cam loc ((va dauh) or (va dau)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang lap tai. hieu va cam loc ((va dauh) OR (va dau)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ky sang lap tai. hieu va cam loc ((va dauh) or (va dau)) vi cua te*.