Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
nang soan » nang song, nang suat, nang quan
thu tich » chu tich, chu thich, thue tinh
tich hoc » tinh hoc, dich hoc, tich hop
ban soan » bien soan, ban doanh, ban quan
hai van » thai van, ha van, hai tan
mo hoc » mon hoc, co hoc
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu tich hoc tap, nghien cuu mo hoc nganh hoa hoc ma hai van ((ban soan) or (nang soan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu tich hoc tap, nghien cuu mo hoc nganh hoa hoc ma hai van ((ban soan) OR (nang soan)).
• Adding a wildcard symbol may retrieve word variants: thu tich hoc tap, nghien cuu mo hoc nganh hoa hoc ma hai van ((ban soan) or (nang soan))*.