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
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va hanh, dia danh
cam loc » cam lo
lap hai » lap tai, lap lai, lap hoat
hieu va » lieu va, hieu qua
ky sang » ky nang, ky dang, ky tang
va cam » va cham, va cac, va cao
va dan » ca dan, va dao, va dau
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 hai. hieu va cam loc ((va danh) or (va dan)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky sang lap hai. hieu va cam loc ((va danh) OR (va dan)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ky sang lap hai. hieu va cam loc ((va danh) or (va dan)) vai cua te*.