Perhaps you should try some spelling variations:
mach hoc » cach hoc, dich hoc, anh hoc
te mach » ke mach, te sach, tim mach
hoc mai » hoc dai, hoc bai, hoc may
hoi cap » hoi dap, hoi cac, hoi cau
cap han » cap phan, cap can, cap hay
han van » phan van, nhan van, hanh van
mo hoc » mon hoc, co hoc
hoc da » hoc dan, hoc dai, hoc dat

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te mach hoc tap, nghien cuu mo hoc da khoa ((hoc mai) OR (hoc ma)) hoi cap han van~".
• Adding a wildcard symbol may retrieve word variants: te mach hoc tap, nghien cuu mo hoc da khoa ((hoc mai) OR (hoc ma)) hoi cap han van*.