Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
dai khoa » da khoa, tai khoa, dac khoa
chao tu » chao xu, cho tu, cao tu
cua tuc » cua duc, cua tu, luat tuc
hieu su » hieu sau, tieu su, hieu so
su chao » su cao, sau chan
lai hoi » dai hoi, lai hoa, lai roi
ky sang » ky nang, ky dang, ky tang
sai ky » sac ky
tu sai » tu bai, tu san, tu cai

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 ((lai hoi) or (dai khoa)). hieu su chao tu va thanh vai ((cua tuc) or (cua thuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky sang ((lai hoi) OR (dai khoa)). hieu su chao tu va thanh vai ((cua tuc) OR (cua thuoc)).
• Adding a wildcard symbol may retrieve word variants: tu sai ky sang ((lai hoi) or (dai khoa)). hieu su chao tu va thanh vai ((cua tuc) or (cua thuoc))*.