Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh, hoc phan
khoa hoc » hoa hoc
dong van » duong van, dang van, dong von
tu sach » thu sach, su sach, te sach
hoi tap » hoc tap, hoi tai, hai tap
va dong » van dong, ha dong, xa dong
mo hoc » mon hoc, co hoc
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 ((hoi tap) OR (hoi dap)), nghien cuu mo hoc nhanh khoa hoc xa hoi va dong van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((hoi tap) OR (hoi dap)), nghien cuu mo hoc nhanh khoa hoc xa hoi va dong van".
• Adding a wildcard symbol may retrieve word variants: tu sach ((hoi tap) OR (hoi dap)), nghien cuu mo hoc nhanh khoa hoc xa hoi va dong van*.