Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
cong thai » cong hai, hong thai, cong thanh
hoc nganh » hoc nhanh
khong khi » khong he
cac ngan » cac nganh, sach ngan, tai ngan
cac nhan » ca nhan, cac nha, cam nhan
thu hoc » tu hoc, thu hoi, tru hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( hoc ((cac ngan) OR (cac nhan)) cong thai đong luc ) or ( thu hoc nganh khong khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( hoc ((cac ngan) OR (cac nhan)) cong thai đong luc ) OR ( thu hoc nganh khong khi đong luc )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( hoc ((cac ngan) OR (cac nhan)) cong thai đong luc ) or ( thu hoc nganh khong khi đong luc ))".
• Adding a wildcard symbol may retrieve word variants: (( hoc ((cac ngan) OR (cac nhan)) cong thai đong luc ) or ( thu hoc nganh khong khi đong luc ))*.