Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
tang ma » mang may, tang van
sang ma » nang ma, sang tao, mang may
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
vai cua » dai cua, hai cua, lai cua
va cam » va cham, va cac, va cao
vi cua » di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((tang ma) or (sang ma)) hoi. hieu va cam tuc xa hanh ((vi cua) or (vai cua)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((tang ma) OR (sang ma)) hoi. hieu va cam tuc xa hanh ((vi cua) OR (vai cua)) tu.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((tang ma) or (sang ma)) hoi. hieu va cam tuc xa hanh ((vi cua) or (vai cua)) tu*.