Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong hoc » khung hoc, thong hoc, khong thuoc
cong hoc » dong hoc, cong hoa, cong coc
mon hoc » toan hoc, dong hoc
van tai » von tai, van tuan
mo hoc » co hoc
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu cong hoc tap, nghien cuu ((mo hoc) or (mon hoc)) nganh khong hoc ma hoi va van tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cong hoc tap, nghien cuu ((mo hoc) OR (mon hoc)) nganh khong hoc ma hoi va van tai.
• Adding a wildcard symbol may retrieve word variants: thu cong hoc tap, nghien cuu ((mo hoc) or (mon hoc)) nganh khong hoc ma hoi va van tai*.