Perhaps you should try some spelling variations:
thuat mach » thuat sach, thuat tach, thuyet mach
nghien huu » nghien cuu, nguyen huu, nhiem huu
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
danh nhan » thanh nhan, benh nhan, dung nhan
mach hoc » cach hoc, dich hoc, anh hoc
tung hoc » trung hoc, tuong hoc, dung hoc
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat mach hoc tap, nghien huu tung hoc nhanh hoa hoc xa hoc ((danh nhan) OR (doanh nhan)) tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat mach hoc tap, nghien huu tung hoc nhanh hoa hoc xa hoc ((danh nhan) OR (doanh nhan)) tai".
• Adding a wildcard symbol may retrieve word variants: thuat mach hoc tap, nghien huu tung hoc nhanh hoa hoc xa hoc ((danh nhan) OR (doanh nhan)) tai*.