Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, mang may
hieu va » lieu va, hieu qua
xa hanh » xa thanh, xa khanh, va hanh
vai cua » hai cua, lai cua, bai cua
sach v » sach va, sach y, sach 2
va cam » va cham, va cac, va cao
xuc xa » tuc xa, buc xa

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 v ((nang ma) or (nang cao)) hoi. hieu va cam xuc xa hanh ((vai cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v ((nang ma) OR (nang cao)) hoi. hieu va cam xuc xa hanh ((vai cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v ((nang ma) or (nang cao)) hoi. hieu va cam xuc xa hanh ((vai cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sach v ((nang ma) or (nang cao)) hoi. hieu va cam xuc xa hanh ((vai cua) OR (dai cua)) tre*.