Perhaps you should try some spelling variations:
thuat mach » thuat sach, thuat tach, thuyet mach
doanh khoa » toan khoa
luc doanh » muc doanh, luat doanh, luc canh
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
cong luc » dong luc, cong suc, cong duc
khoa hoc » hoa hoc
hoi cac » hoc cac, voi cac, hoa cac
nha tao » nhan tao, nha bao, nha tai
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: thuat mach hoc tap, nghien cuu cong luc doanh khoa hoc xa hoi cac ((nha tao) OR (nha cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat mach hoc tap, nghien cuu cong luc doanh khoa hoc xa hoi cac ((nha tao) OR (nha cao))".
• Adding a wildcard symbol may retrieve word variants: thuat mach hoc tap, nghien cuu cong luc doanh khoa hoc xa hoi cac ((nha tao) OR (nha cao))*.