Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh khoa
nganh nong » nganh cong
cac nganh » hoc nganh
khong khi » khong he
nong khi » cong khi, dong khi, nong thi
so cac » sao cac, so cap, o cac
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so cac nganh khong khi đong luc ) or ( su cac nganh nong khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so cac nganh khong khi đong luc ) OR ( su cac nganh nong khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( so cac nganh khong khi đong luc ) or ( su cac nganh nong khi đong luc ))*.