Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
canh thoi » cach thoi, hanh thoi, anh tho
hoc doanh » hoa doanh, hoc danh, hoc dan
doan phan » doanh phan, toan phan, doanh nhan
thu canh » thuc hanh, thu cong, thu ban
thoi dap » hoi dap, thoi dai, thi dap
khoa hoc » hoa hoc
dan phan » dan chan, van phan, dam phan
mot hoc » mon hoc, mo hoc, mot goc
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: thu canh thoi dap, nghien cua mot hoc doanh khoa hoc xa hoi ((dan phan) OR (doan phan)) dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu canh thoi dap, nghien cua mot hoc doanh khoa hoc xa hoi ((dan phan) OR (doan phan)) dan".
• Adding a wildcard symbol may retrieve word variants: thu canh thoi dap, nghien cua mot hoc doanh khoa hoc xa hoi ((dan phan) OR (doan phan)) dan*.