Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
doanh phan » doanh nhan, doan phan, doanh luan
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
thu sach » tu sach, thuat sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
hoc xa » hoc ma
xa doi » xoa doi, xa hoi, xa dai

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 hoc tap, nghien cuu tong hoc nganh hoa hoc xa doi ((doanh phan) OR (doanh thanh)) tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoc tap, nghien cuu tong hoc nganh hoa hoc xa doi ((doanh phan) OR (doanh thanh)) tu".
• Adding a wildcard symbol may retrieve word variants: thu sach hoc tap, nghien cuu tong hoc nganh hoa hoc xa doi ((doanh phan) OR (doanh thanh)) tu*.