Perhaps you should try some spelling variations:
nganh khong » nhanh chong, nganh nong, nganh khoa
nganh cong » nhanh chong, thanh cong
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cong cac » cuong cac, cong tac, cong cau
phan van » pham van, thanh van, luan van
te sach » toc sach
va phan » van phan, va phat, va phap
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: te sach hoc tap, nghien cuu cong cac ((nganh khong) OR (nganh cong)) hoc xa hoi va phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoc tap, nghien cuu cong cac ((nganh khong) OR (nganh cong)) hoc xa hoi va phan van".
• Adding a wildcard symbol may retrieve word variants: te sach hoc tap, nghien cuu cong cac ((nganh khong) OR (nganh cong)) hoc xa hoi va phan van*.