Perhaps you should try some spelling variations:
thu canh » thu cong, thu ban, thu hang
thoi dap » hoi dap, thoi dai, thi dap
hoc toan » hoc tan, hop toan, hoa toan
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi van » hoi va, hoi dan, hai van
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: ((thu canh) OR (thuc hanh)) thoi dap, nghien cuu mon hoc toan khoa hoc xa hoi van nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu canh) OR (thuc hanh)) thoi dap, nghien cuu mon hoc toan khoa hoc xa hoi van nhan dan".
• Adding a wildcard symbol may retrieve word variants: ((thu canh) OR (thuc hanh)) thoi dap, nghien cuu mon hoc toan khoa hoc xa hoi van nhan dan*.