Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
gian dan » gian lang
tu mach » tu cach, tu manh, tu hach
va gian » va gianh, van gian, va giai

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