Perhaps you should try some spelling variations:
sang tao » hang tai
ky sang » ky nang, ky dang, ky tang
tao hoi » tao khoi, tao boi, tay hoi
hieu su » hieu sau, tieu su, hieu so
su chao » su cao, sau chan
doi cua » dai cua, hoi cua
tu sai » tu bai, tu san, tu cai
di cua » dai cua, de cua, do cua
su van » tu van, vu van
sai ky » sac ky
su va » 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 tao hoi. hieu su chao ((su va) OR (su van)) hanh ((di cua) OR (doi cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky sang tao hoi. hieu su chao ((su va) OR (su van)) hanh ((di cua) or (doi cua)) te~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky sang tao hoi. hieu su chao ((su va) OR (su van)) hanh ((di cua) or (doi cua)) te*.