Perhaps you should try some spelling variations:
sang lap » sang tao, sang ma, sang tai
hieu so » thieu so
va hanh » van hanh, va thanh, va danh
ky sang » ky nang, ky dang, ky tang
lap hoi » lap doi, lai hoi, lap hai
hieu su » hieu sau, tieu su, hieu suat
doi cua » dai cua, hoi cua
chao su » cao su, chao xu, achat su
di cua » dai cua, de cua, do cua
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
su va » su van, tu va

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 sai ky sang lap hoi. ((hieu su) OR (hieu so)) chao su va hanh ((di cua) OR (doi cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky sang lap hoi. ((hieu su) or (hieu so)) chao su va hanh ((di cua) OR (doi cua)) te~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky sang lap hoi. ((hieu su) or (hieu so)) chao su va hanh ((di cua) OR (doi cua)) te*.