Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
ky tang » ky dang, kho tang, ky trong
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc ban » duc tan, duc van, dua ban
su cao » cu cao, vu cao, su co
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cao ((ky tang) OR (ky nang)) ((mai hoi) or (xa hoi)). hieu ve cam duc ban thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cao ((ky tang) OR (ky nang)) ((mai hoi) OR (xa hoi)). hieu ve cam duc ban thanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cao ((ky tang) OR (ky nang)) ((mai hoi) or (xa hoi)). hieu ve cam duc ban thanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: su cao ((ky tang) OR (ky nang)) ((mai hoi) or (xa hoi)). hieu ve cam duc ban thanh dai cua triet*.