Perhaps you should try some spelling variations:
doanh khoa » toan khoa
van thanh » ban thanh, van tuan
hoc doanh » hoa doanh, hoc danh, hoc dan
cach thoi » cach thuc, cach noi
thanh dan » thanh san, thanh van, thanh dat
cac thoi » cac toi, cac hop, cac tro
khoa hoc » hoa hoc
cuu mon » cuu mo, cuu mot, cuu cong
hai van » thai van, ha van, hai tan
mon hoc » toan hoc, dong hoc
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

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