Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
hieu ve » hieu va, hieu van
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve bac » ve bao, ve cac, ve ban
bac vo » bac bo, bac ho, bac va
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((x hoi) OR (x ho)). hieu ve bac vo van hanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((x hoi) OR (x ho)). hieu ve bac vo van hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) OR (x ho)). hieu ve bac vo van hanh dai cua triet*.