Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc danh, hoc dan
doanh hoa » doanh khoa, doanh hoan, danh hoa
mach hoc » dich hoc, anh hoc, bac hoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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) OR (cach hoc)) tap, nghien cuu mot hoc doanh hoa hoc xa hoi ca nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((mach hoc) OR (cach hoc)) tap, nghien cuu mot hoc doanh hoa hoc xa hoi ca nhan va".
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) OR (cach hoc)) tap, nghien cuu mot hoc doanh hoa hoc xa hoi ca nhan va*.