Perhaps you should try some spelling variations:
doanh phan » doanh nhan, doan phan, doanh thanh
sach duoc » sach nuoc, sach dao, sach dung
hoc thanh » hoc nhanh, hoan thanh, hoc phan
thanh hoa » thanh pho
hoi doanh » hoa doanh, voi doanh, doi doanh
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
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: thu ((sach duoc) or (mach hoc)) tap, nghien cuu dong hoc thanh hoa hoc xa hoi doanh phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach duoc) OR (mach hoc)) tap, nghien cuu dong hoc thanh hoa hoc xa hoi doanh phan tu.
• Adding a wildcard symbol may retrieve word variants: thu ((sach duoc) or (mach hoc)) tap, nghien cuu dong hoc thanh hoa hoc xa hoi doanh phan tu*.