Perhaps you should try some spelling variations:
nghiem duoc » nghiem thuoc, nghe duoc
nghiem nuoc » nghiem quoc, nghiem thuoc, nghiep cuoc
thu nghiem » thuc nghiem, thi nghiem
khach thi » khac thi, khach trai, quach thi
nghi thuc » nghe thuc
thanh thu » thanh thuy, thanh tu, khanh thu
vu thanh » su thanh, vu khanh, cuu thanh
nuoc hoi » quoc hoi, duoc hoi, ngoc hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vay khach thi ((nghi thuc) or (nghiem duoc)) hoc ) or ( vu thanh thu nghiem nuoc hoi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vay khach thi ((nghi thuc) OR (nghiem duoc)) hoc ) OR ( vu thanh thu nghiem nuoc hoi )).
• Adding a wildcard symbol may retrieve word variants: (( vay khach thi ((nghi thuc) or (nghiem duoc)) hoc ) or ( vu thanh thu nghiem nuoc hoi ))*.