Perhaps you should try some spelling variations:
doanh khoa » toan khoa
canh thoi » cach thoi, hanh thoi, anh tho
hoc doanh » hoa doanh, hoc danh, hoc dan
thu canh » thuc hanh, thu cong, thu ban
van nhan » van phan, van thanh, danh nhan
khoa hoc » hoa hoc
cuu hoan » luu hoang, cuu van, cuu khoa
cuu toan » cua toan, huu toan, cuu thanh
thoi dap » hoi dap, thoi dai, thi dap
nhan tai » hang tai, van tai, toan tai
hai van » thai van, ha van, hai tan
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: thu canh thoi dap, nghien ((cuu toan) OR (cuu hoan)) hoc doanh khoa hoc xa hai van nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu canh thoi dap, nghien ((cuu toan) OR (cuu hoan)) hoc doanh khoa hoc xa hai van nhan tai".
• Adding a wildcard symbol may retrieve word variants: thu canh thoi dap, nghien ((cuu toan) OR (cuu hoan)) hoc doanh khoa hoc xa hai van nhan tai*.