Perhaps you should try some spelling variations:
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
chuc ngan » chuc nganh, chuc nang, cua ngan
sach moi » sach hoi, bach mai, sach bai
sach doi » sach hoi, sach dao, sach bai
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
ngan dau » nganh dau, ngay dau, ngan danh
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: te ((sach moi) OR (sach doi)) tap, nghien cuu cong hoc doanh khoa hoc xa hoi chuc ngan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach moi) OR (sach doi)) tap, nghien cuu cong hoc doanh khoa hoc xa hoi chuc ngan dau".
• Adding a wildcard symbol may retrieve word variants: te ((sach moi) OR (sach doi)) tap, nghien cuu cong hoc doanh khoa hoc xa hoi chuc ngan dau*.