Perhaps you should try some spelling variations:
hoc nhanh » hoc phan
chong hoc » chung hoc, chong doc, thong hoc
sach hoc » cach hoc, sach hoi, mach hoc
dap nhan » dap nha, dac nhan, dam nhan
nhan dan » phan dau, gian dan, nhan tai
tu sach » thu sach, su sach, te sach
hoc xa » hoc ma

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 khoa ((hoc nhanh) OR (hoc nganh)) chong hoc xa hoi dap nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu khoa ((hoc nhanh) OR (hoc nganh)) chong hoc xa hoi dap nhan dan".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu khoa ((hoc nhanh) OR (hoc nganh)) chong hoc xa hoi dap nhan dan*.