Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
hoc nganh » hoc nhanh
khung hoc » chung hoc, nhung hoc, thuong hoc
sach hoc » cach hoc, sach hoi, mach hoc
nhan tai » hang tai, toan tai
tu sach » thu sach, su sach, te sach
van tai » von tai, van tuan
mo hoc » mon hoc, co hoc
hoc xa » hoc ma
hoi cu » hoi chu, hoi cua, hoi cau

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