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