Perhaps you should try some spelling variations:
doanh phan » doanh nhan, doan phan, doanh thanh
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
danh phan » danh nhan, danh phap, anh phan
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
tu sach » thu sach, su sach, te sach
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: tu sach hoc tap, nghien cuu dong hoc nganh hoa hoc xa hoi ((danh phan) OR (doanh phan)) dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu dong hoc nganh hoa hoc xa hoi ((danh phan) OR (doanh phan)) dau".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu dong hoc nganh hoa hoc xa hoi ((danh phan) OR (doanh phan)) dau*.