Perhaps you should try some spelling variations:
lang mai » lang dai, lang hai, lang man
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh tai, hanh van
va triet » va thiet, va trien, ve triet
ky lang » ky nang, ky dang, ky tang
mai hoi » mai khoi, dai hoi, lai hoi
van cam » van nam, van lam, van cau
cam duc » cam xuc, cao duc, pham duc
hanh va » hang va, hanh vi
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky lang mai hoi. hieu van cam duc va ((hanh vai) or (hanh va)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang mai hoi. hieu van cam duc va ((hanh vai) OR (hanh va)) va triet.
• Adding a wildcard symbol may retrieve word variants: su sac ky lang mai hoi. hieu van cam duc va ((hanh vai) or (hanh va)) va triet*.