Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
chat xuc » chat huu, cam xuc, chao xu
ban hanh » ban hang
su chat » su phat, du chat, so chat
ky sang » ky nang, ky dang, duy sang
ky tang » ky nang, ky dang, kho tang
lai hoi » dai hoi, lai hoa, lai roi
hieu su » hieu sau, tieu su, hieu so
di cua » dai cua, doi cua, de cua
tu sai » tu bai, tu san, tu cai
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ((ky sang) or (ky tang)) lai hoi. hieu su chat xuc ((ban hanh) or (van hanh)) di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ((ky sang) OR (ky tang)) lai hoi. hieu su chat xuc ((ban hanh) OR (van hanh)) di cua su.
• Adding a wildcard symbol may retrieve word variants: tu sai ((ky sang) or (ky tang)) lai hoi. hieu su chat xuc ((ban hanh) or (van hanh)) di cua su*.