Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
chat duc » chat xuc, chat doc, chet duoc
hanh dao » lanh dao, thanh dat, thanh dam
sach ky » sac ky, sach y, sach ty
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
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: thuat sach 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: thuat sach 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: thuat sach ky nang x hoi. ((hieu ve) or (hieu va)) chat duc va hanh dao ((cua tre) or (cua triet))*.