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