Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
phan dau » phan tu, hang dau
tu mach » tu cach, tu manh, tu hach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
ca phan » cac phan, cao phan, cap phan
ma hoi » mai hoi, xa hoi, ma hoa
hoi ca » hoi cua, hoi cac, hoi cau

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 ((khoa hoc) OR (hoa hoc)) ma hoi ca phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cuu mon hoc nganh ((khoa hoc) OR (hoa hoc)) ma hoi ca phan dau".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu mon hoc nganh ((khoa hoc) OR (hoa hoc)) ma hoi ca phan dau*.