Perhaps you should try some spelling variations:
hanh hoc » thanh hoc, hinh hoc, anh hoc
dan khoa » dang khoa, da khoa, san khoa
khoa hoc » hoa hoc
du hanh » dieu hanh, duy khanh, luu hanh
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
va nhan » van nhan, va phan, va nha
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: du hanh hoc tap, nghien cuu mon hoc dan khoa hoc xa hoi ((va nhan) OR (ca nhan)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "du hanh hoc tap, nghien cuu mon hoc dan khoa hoc xa hoi ((va nhan) OR (ca nhan)) van".
• Adding a wildcard symbol may retrieve word variants: du hanh hoc tap, nghien cuu mon hoc dan khoa hoc xa hoi ((va nhan) OR (ca nhan)) van*.