Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
mach hoc » cach hoc, dich hoc, anh hoc
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
tu mach » tu cach, tu manh, tu hach
vo pham » vi pham, v pham, toi pham
hoa vo » hoa co

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 toan hoc nhanh ((dong luc) or (nang luc)) ma hoa vo pham van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien cuu toan hoc nhanh ((dong luc) OR (nang luc)) ma hoa vo pham van.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu toan hoc nhanh ((dong luc) or (nang luc)) ma hoa vo pham van*.