Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hoa nganh » hoc nganh, khoi nganh, hoa doanh
ban mach » ban sach, ranh mach, ban hanh
mach hoc » cach hoc, dich hoc, anh hoc
cong hoa » dong hoa, dong hoc, hang hoa
thuoc va » thuc va, thuoc ma, thuong va
nhan van » nhan dan, nhan va, nha van
phan van » pham van, thanh van, luan van
va hoi » xa hoi, va hoc, va hoa
hoi ca » hoi cua, hoi cac, 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: ban mach hoc tap, nghien thu cong hoa nganh khong thuoc va hoi ca ((nhan van) OR (phan van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ban mach hoc tap, nghien thu cong hoa nganh khong thuoc va hoi ca ((nhan van) OR (phan van))".
• Adding a wildcard symbol may retrieve word variants: ban mach hoc tap, nghien thu cong hoa nganh khong thuoc va hoi ca ((nhan van) OR (phan van))*.