Perhaps you should try some spelling variations:
nhung co » nhung con, nhung bo, chung co
tien khi » trien khai
tu cach » tu cac
doi bai » hoi bai, doi ban, doi boi
doi vai » doi voi, doi va, doi tai
khi cua » chi cua, thai cua
noi hoc » hoi hoc, noi khoa, loai hoc
voi hoc » hoi hoc, vi hoc, voi ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach ((noi hoc) or (voi hoc)) tien khi cua ets : nhung co ((doi vai) or (doi bai)) đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach ((noi hoc) OR (voi hoc)) tien khi cua ets : nhung co ((doi vai) OR (doi bai)) đai.
• Adding a wildcard symbol may retrieve word variants: tu cach ((noi hoc) or (voi hoc)) tien khi cua ets : nhung co ((doi vai) or (doi bai)) đai*.