Perhaps you should try some spelling variations:
doanh khoa » toan khoa
cach thoi » cac thoi, cach noi
cach thuc » anh thuc, cac thu
hoc doanh » hoa doanh, hoc danh, hoc dan
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
hoi van » hoi va, hoi dan, hai van
nhan va » nhan tai, nhan dan, nhan tao
cuu co » huu co, cua co, cuu mo
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: tu ((cach thoi) OR (cach thuc)) dap, nghien cuu co hoc doanh khoa hoc xa hoi van nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cach thoi) OR (cach thuc)) dap, nghien cuu co hoc doanh khoa hoc xa hoi van nhan va".
• Adding a wildcard symbol may retrieve word variants: tu ((cach thoi) OR (cach thuc)) dap, nghien cuu co hoc doanh khoa hoc xa hoi van nhan va*.