Perhaps you should try some spelling variations:
tang lai » trang lai, tang tai, tang loi
ky tang » ky nang, ky dang, kho tang
lai hoi » dai hoi, lai hoa, lai roi
hieu vu » hieu va, hieu ve, hieu su
vu chao » vu cao, vu cham, vu chat
va hanh » van hanh, va thanh, va danh
tu van » tu va
cua tu » cua tuc, cua cu, cua te
cua su » qua su
xu va » xu van, tu va, su va

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

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