Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
khong hoc » thong hoc, khong thuoc, khong chuc
khung hoc » chung hoc, nhung hoc, thuong hoc
sach hoc » cach hoc, sach hoi, mach hoc
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
dap gian » dan gian, dam gian, don gian
gian dan » gian lang
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghien cuu toan hoc nganh ((khong hoc) OR (khung hoc)) xa hoi dap gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu toan hoc nganh ((khong hoc) OR (khung hoc)) xa hoi dap gian dan".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu toan hoc nganh ((khong hoc) OR (khung hoc)) xa hoi dap gian dan*.