Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
canh thoi » hanh thoi, anh tho, anh thi
cach thoi » cac thoi, cach thuc, cach noi
goc doanh » hoa doanh, voi doanh, von doanh
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
hoi van » hoi va, hoi dan, hai van
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) OR (cach thoi)) dap, nghien cua mot goc doanh khoa hoc xa hoi van nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((canh thoi) OR (cach thoi)) dap, nghien cua mot goc doanh khoa hoc xa hoi van nhan dan".
• Adding a wildcard symbol may retrieve word variants: thu ((canh thoi) OR (cach thoi)) dap, nghien cua mot goc doanh khoa hoc xa hoi van nhan dan*.