Perhaps you should try some spelling variations:
danh nhan » doanh nhan, thanh nhan, benh nhan
thoi dap » hoi dap, thoi dai, thoi dao
cuu toan » cuu hoan, cua toan, huu toan
toan hoc » toan khoa, van hoc, hoa hoc
dan khoa » dang khoa, da khoa, san khoa
khoa hoc » hoa hoc
hoi danh » hop danh, hoi dan, hoc danh
nhan dan » phan dau, gian dan, nhan tai
thi dap » thi dai, thi dan, thi dep
hoc xa » hoc ma
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuc hanh ((thoi dap) or (thi dap)), nghien cuu toan hoc dan khoa hoc xa hoi danh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuc hanh ((thoi dap) OR (thi dap)), nghien cuu toan hoc dan khoa hoc xa hoi danh nhan dan.
• Adding a wildcard symbol may retrieve word variants: thuc hanh ((thoi dap) or (thi dap)), nghien cuu toan hoc dan khoa hoc xa hoi danh nhan dan*.