Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc danh, hoc dan
doanh hoa » doanh khoa, doanh hoan, danh hoa
sanh hoc » sinh hoc, anh hoc, danh hoc
nhan tai » van tai, toan tai
hang tai » hang va, dung tai
so sanh » do sanh
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hoi cau » hoi chu, hoc cau, hoa cau
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: so sanh hoc tap, nghien cuu mot hoc doanh hoa hoc xa hoi cau ((nhan tai) or (hang tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh hoc tap, nghien cuu mot hoc doanh hoa hoc xa hoi cau ((nhan tai) OR (hang tai)).
• Adding a wildcard symbol may retrieve word variants: so sanh hoc tap, nghien cuu mot hoc doanh hoa hoc xa hoi cau ((nhan tai) or (hang tai))*.