Perhaps you should try some spelling variations:
khong thuong » thong thuong, hang thuong, cong thuong
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
phan van » pham van, thanh van, luan van
so sach » so sanh, bo sach, co sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va phan » van phan, va phat, va phap
va hoi » va hoc, va hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach hoc tap, nghien cuu mon hoc nganh khong thuong ((va hoi) OR (xa hoi)) va phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach hoc tap, nghien cuu mon hoc nganh khong thuong ((va hoi) OR (xa hoi)) va phan van".
• Adding a wildcard symbol may retrieve word variants: so sach hoc tap, nghien cuu mon hoc nganh khong thuong ((va hoi) OR (xa hoi)) va phan van*.