Perhaps you should try some spelling variations:
thuat mach » thuat sach, thuat tach, thuyet mach
nghien huu » nghien cuu, nguyen huu, nhiem huu
hoc thanh » hoc nhanh, hoan thanh, hoc phan
thanh hoa » thanh pho
danh toan » manh toan, anh toan, dan toan
mach hoc » cach hoc, dich hoc, anh hoc
huu dung » huu tung, huu quang, thuy dung
dung hoc » dong hoc, dung thuoc, trung hoc
toan tai » toan tap, doanh tai, toan ban
xa hoc » xa hoi, xa hoa, ta hoc
va hoc » van hoc

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 dung hoc thanh hoa hoc ((xa hoc) OR (va hoc)) danh toan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat mach hoc tap, nghien huu dung hoc thanh hoa hoc ((xa hoc) OR (va hoc)) danh toan tai".
• Adding a wildcard symbol may retrieve word variants: thuat mach hoc tap, nghien huu dung hoc thanh hoa hoc ((xa hoc) OR (va hoc)) danh toan tai*.