Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
mach hoc » cach hoc, dich hoc, anh hoc
hoc bang » hoc tang, hoc dan, hoc bai
hoc bong » hoc cong, hoc trong, hoc luong
khoa hoc » hoa hoc
tu mach » tu cach, tu manh, tu hach
va nhan » van nhan, ca nhan, va phan
nhan va » nhan tai, nhan dan, nhan tao
cua co » cua bo, cua cong
hoc xa » hoc ma

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 cua co ((hoc bang) OR (hoc bong)) khoa hoc xa hoi va nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cua co ((hoc bang) OR (hoc bong)) khoa hoc xa hoi va nhan va".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cua co ((hoc bang) OR (hoc bong)) khoa hoc xa hoi va nhan va*.