Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh khoa
nganh nong » nganh cong
mach hoc » cach hoc, dich hoc, anh hoc
thuoc va » thuc va, thuoc ma, thuong va
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
tu mach » tu cach, tu manh, tu hach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi van » hoi va, hoi dan, hai van
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: tu mach hoc tap, nghien cuu mon hoc ((nganh khong) OR (nganh nong)) thuoc va hoi van nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cuu mon hoc ((nganh khong) OR (nganh nong)) thuoc va hoi van nhan van".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu mon hoc ((nganh khong) OR (nganh nong)) thuoc va hoi van nhan van*.