Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chat duc » chat xuc, chat doc, chet duoc
hanh dao » lanh dao, thanh dat, thanh dam
thu sac » thu sach, thu san, thu xac
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, dua tren
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang x hoi. ((hieu ve) or (hieu va)) chat duc va hanh dao ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sac ky nang x hoi. ((hieu ve) OR (hieu va)) chat duc va hanh dao ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang x hoi. ((hieu ve) or (hieu va)) chat duc va hanh dao ((cua tre) or (cua triet))*.