Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cau phan » chau phan, cuu phan, cac phan
phan van » pham van, thanh van, luan van
tu sach » thu sach, su sach, te sach
cuu mot » cua mot, cuu mo, huu mot
hoi cau » hoi chu, hoc cau, hoa cau
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 cong) or (cuu mot)) hoc nganh khong hoc xa hoi cau phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien ((cuu cong) OR (cuu mot)) hoc nganh khong hoc xa hoi cau phan van.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien ((cuu cong) or (cuu mot)) hoc nganh khong hoc xa hoi cau phan van*.