Perhaps you should try some spelling variations:
doanh khoa » toan khoa
thanh van » thanh san, thanh toan, thanh phan
hoa doanh » toan doanh, hoa dan
sach hoi » sach doi, sach moi, cach thoi
khoa hoc » hoa hoc
cong hoa » dong hoa, dong hoc, hang hoa
cuu cong » cua cong, thu cong, cac cong
hoc mai » hoc ma, hoc dai, hoc bai
hoi cuu » hoi chu, hoi cua, hoi cau
hoi tap » hoi dap, hoc tap, hoi tai
te sach » toc sach
ho cuu » ho chu, ho cua, so cuu

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 hoi tap, nghien cuu cong hoa doanh khoa hoc mai ((hoi cuu) OR (ho cuu)) thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach hoi tap, nghien cuu cong hoa doanh khoa hoc mai ((hoi cuu) OR (ho cuu)) thanh van".
• Adding a wildcard symbol may retrieve word variants: te sach hoi tap, nghien cuu cong hoa doanh khoa hoc mai ((hoi cuu) OR (ho cuu)) thanh van*.