Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nhanh dong » hanh dong, nhanh chong, anh dong
cua thanh » gia thanh, va thanh, ha thanh
thanh hoc » thanh hoa, than hoc, thanh ho
hoc nhanh » hoc nganh, hoc phan
dong suc » duong suc, dong luc, dong su
tu mach » tu cach, tu manh, tu sach
tu hach » tu hanh, tu cach, tu sach
vo pham » vi pham, v pham, toi pham
suc ma » suc manh
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) or (tu hach)) hoc tap, nghien cua thanh hoc nhanh dong suc ma hoa vo pham van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu mach) OR (tu hach)) hoc tap, nghien cua thanh hoc nhanh dong suc ma hoa vo pham van.
• Adding a wildcard symbol may retrieve word variants: ((tu mach) or (tu hach)) hoc tap, nghien cua thanh hoc nhanh dong suc ma hoa vo pham van*.