Perhaps you should try some spelling variations:
hanh dong » anh dong, ha dong
sach hoc » cach hoc, sach hoi, mach hoc
dong hoc » dong co
dong luc » nang luc
tu sach » thu sach, su sach, te sach
mon hoc » toan hoc
luc van » luoc van, luu van, duc van
vo pham » vi pham, v pham, toi pham
hoa vo » hoa co

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghien cuu ((mon hoc) OR (dong hoc)) hanh dong luc van hoa vo pham van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu ((mon hoc) OR (dong hoc)) hanh dong luc van hoa vo pham van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu ((mon hoc) OR (dong hoc)) hanh dong luc van hoa vo pham van*.