Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
mach hoc » cach hoc, dich hoc, anh hoc
cuu long » cuu cong, cuu tong, cuu nang
co nganh » hoc nganh, cac nganh, moi nganh
khoa hoc » hoa hoc
van gian » van giang, dan gian, van giao
tu mach » tu cach, tu manh, tu hach
long co » dong co, cong co, lang co
va gian » va gianh, va giai, va gia
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 long co nganh khoa hoc xa hoi ((va gian) OR (van gian)) dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu mach hoc tap, nghien cuu long co nganh khoa hoc xa hoi ((va gian) OR (van gian)) dan".
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien cuu long co nganh khoa hoc xa hoi ((va gian) OR (van gian)) dan*.