Perhaps you should try some spelling variations:
sang lap » sang tao, sang tai, dan lap
so sach » so sanh, bo sach, co sach
va hanh » van hanh, va thanh, ban hanh
sang ma » tang ma, nang ma, sang tao
va danh » va dinh, va dan, dia danh
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam
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 y ((sang lap) or (sang ma)) hai. hieu ve cam luc ((va hanh) OR (va danh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((sang lap) OR (sang ma)) hai. hieu ve cam luc ((va hanh) OR (va danh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y ((sang lap) or (sang ma)) hai. hieu ve cam luc ((va hanh) OR (va danh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: so sach y ((sang lap) or (sang ma)) hai. hieu ve cam luc ((va hanh) OR (va danh)) vi cua te*.