Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, te sach
thuc xa » thuc xay, tuc xa, thuc va
ky sang » ky nang, ky dang, ky tang
mai hoi » mai khoi, dai hoi, lai hoi
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va
sach ky » sac ky, sach y, sach ty
xa hanh » xa thanh, xa khanh, va hanh
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ((mai hoi) OR (xa hoi)). ((hieu va) OR (hieu qua)) nam thuc xa hanh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ((mai hoi) or (xa hoi)). ((hieu va) OR (hieu qua)) nam thuc xa hanh vai cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ((mai hoi) or (xa hoi)). ((hieu va) OR (hieu qua)) nam thuc xa hanh vai cua te*.