Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
mach hoc » cach hoc, dich hoc, anh hoc
nong hoc » nang hoc, nong thon, duong hoc
dong hoc » dong co, dong luc
hoi benh » hoc benh, hoa benh, hoi binh
nhan van » nhan dan, nhan va, phan van
te mach » ke mach, te sach, tim mach
mo hoc » mon hoc, co hoc

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

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