Perhaps you should try some spelling variations:
nganh dong » nganh cong, nhanh dong, nganh nong
dong thuoc » dung thuoc, dang thuoc, don thuoc
mach hoc » cach hoc, dich hoc, anh hoc
dong hoc » dong co, dong luc
thuoc va » thuc va, thuoc ma, thuong va
nhan van » nhan dan, nhan va, phan van
ke mach » ke hoach
mon hoc » toan hoc
va nhan » van nhan, ca nhan, va phan
va hoi » xa hoi, va hoc, va hoa

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

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