Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
hoc nhanh » hoc phan
mach hoc » cach hoc, dich hoc, anh hoc
cac cong » cua cong
khoa hoc » hoa hoc
nhan dan » phan dau, gian dan, nhan tai
tu mach » tu cach, tu manh, tu hach
cu nhan » ca nhan
hoc xa » hoc ma
hoi cu » hoi chu, hoi cua, 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 cac cong ((hoc nganh) OR (hoc nhanh)) khoa hoc xa hoi cu nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cac cong ((hoc nganh) OR (hoc nhanh)) khoa hoc xa hoi cu nhan dan".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cac cong ((hoc nganh) OR (hoc nhanh)) khoa hoc xa hoi cu nhan dan*.