Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh hoa » thanh hoa, khanh hoa, danh hoa
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
nhan van » nhan dan, nhan va, phan van
su sach » so sach, vu sach
va nhan » van nhan, ca nhan, va phan
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: su sach hoc tap, nghien thu cong hoc ((nganh hoa) or (thanh pho)) hoc xa hoi va nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoc tap, nghien thu cong hoc ((nganh hoa) OR (thanh pho)) hoc xa hoi va nhan van.
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien thu cong hoc ((nganh hoa) or (thanh pho)) hoc xa hoi va nhan van*.