Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
may nang » may nong, ky nang, cam nang
tu sach » thu sach, su sach, te sach
lieu ca » lieu cao, lieu va, lieu ma
dao duc » giao duc, tao duoc
duc ban » duc tan, duc van, dua ban
v nang » va nang, vu nang, van nang

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 ((may nang) or (v nang)) xa hoi. lieu ca dao duc ban thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((may nang) OR (v nang)) xa hoi. lieu ca dao duc ban thanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((may nang) or (v nang)) xa hoi. lieu ca dao duc ban thanh dai cua triet*.