Perhaps you should try some spelling variations:
nghien cua » nghiep cua, nghiep vua, nghe cua
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoa nganh » hoc nganh, khoi nganh, hoa doanh
mach hoc » cach hoc, dich hoc, anh hoc
cong hoa » dong hoa, dong hoc, hang hoa
khoa hoc » hoa hoc
phan van » pham van, thanh van, luan van
tu mach » tu cach, tu manh, tu hach
ca phan » cac phan, cao phan, cap phan
hoc xa » hoc ma
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: tu mach hoc tap, ((nghien cua) OR (nghien cuu)) cong hoa nganh khoa hoc xa hoi ca phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, ((nghien cua) OR (nghien cuu)) cong hoa nganh khoa hoc xa hoi ca phan van".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, ((nghien cua) OR (nghien cuu)) cong hoa nganh khoa hoc xa hoi ca phan van*.