Perhaps you should try some spelling variations:
cong thuoc » dong thuoc, long thuoc, cong thuong
hoc nganh » hoc nhanh
cong thuc » cong tac
mach hoc » cach hoc, dich hoc, anh hoc
nhan van » nhan dan, nhan va, phan van
so mach » so sach, tao mach, kon mach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, ca nhan, va phan
va hoa » van hoa, va hoc, ma hoa
hoa va » hoa van, hoa xa, hoa vo

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

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