Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
hanh thoi » hanh thuoc, nhanh thai, hanh noi
hoc doanh » hoa doanh, hoc danh, hoc dan
thoi dap » hoi dap, thoi dai, thi dap
cua toan » cuu toan, xuan toan, cua thanh
toan hoc » toan khoa, van hoc, hoa hoc
khoa hoc » hoa hoc
van nhan » van thanh, danh nhan, van khanh
van phan » van phong, van thanh, luan phan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi
thuc » thu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuc hanh thoi dap, nghien cua toan hoc doanh khoa hoc xa hai ((van nhan) OR (van phan)) dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuc hanh thoi dap, nghien cua toan hoc doanh khoa hoc xa hai ((van nhan) OR (van phan)) dan".
• Adding a wildcard symbol may retrieve word variants: thuc hanh thoi dap, nghien cua toan hoc doanh khoa hoc xa hai ((van nhan) OR (van phan)) dan*.