Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
khoa hoc » hoa hoc
nhan tai » hang tai, van tai, toan tai
te mach » ke mach, te sach, tim mach
nhan va » nhan dan, nhan tao, phan van
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: te mach hoc tap, nghien cuu tong hoc nganh khoa hoc xa hoi va ((nhan va) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te mach hoc tap, nghien cuu tong hoc nganh khoa hoc xa hoi va ((nhan va) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: te mach hoc tap, nghien cuu tong hoc nganh khoa hoc xa hoi va ((nhan va) OR (nhan tai))*.