Perhaps you should try some spelling variations:
thuat mach » thuat sach, thuat tach, thuyet mach
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
mach hoc » cach hoc, dich hoc, anh hoc
khoa hoc » hoa hoc
khoa cac » khoa cam, khoa can, khoa cap
nhan dan » phan dau, gian dan, nhan tai
mot hoc » mon hoc, mo hoc, mot goc
hoc mai » hoc ma, hoc dai, hoc bai
hoa cac » hoa chat, chon cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuat mach hoc tap, nghien cua mot hoc nganh khoa hoc mai ((khoa cac) OR (hoa cac)) nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat mach hoc tap, nghien cua mot hoc nganh khoa hoc mai ((khoa cac) OR (hoa cac)) nhan dan".
• Adding a wildcard symbol may retrieve word variants: thuat mach hoc tap, nghien cua mot hoc nganh khoa hoc mai ((khoa cac) OR (hoa cac)) nhan dan*.