Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc dan, hoc nganh
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
hoc danh » hoc dan, hoc anh, hoc hanh
khoa hoc » hoa hoc
tu mach » tu cach, tu manh, tu hach
va luan » vay luan, van luan, va quan
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 cuu cong ((hoc doanh) OR (hoc danh)) khoa hoc xa hoi va luan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cuu cong ((hoc doanh) OR (hoc danh)) khoa hoc xa hoi va luan van".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu cong ((hoc doanh) OR (hoc danh)) khoa hoc xa hoi va luan van*.