Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh khoa
nganh nong » nganh cong
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
dap nhan » dap nha, dac nhan, dam nhan
nhan van » nhan dan, nhan va, phan van
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: thu sach hoc tap, nghien cuu mo hoc ((nganh khong) OR (nganh nong)) hoc xa hoi dap nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoc tap, nghien cuu mo hoc ((nganh khong) OR (nganh nong)) hoc xa hoi dap nhan van".
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghien cuu mo hoc ((nganh khong) OR (nganh nong)) hoc xa hoi dap nhan van*.