Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
cam duc » cao duc, pham duc, nam duoc
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
cua te » cua tu
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: tu sach y nang x hoi. hieu ve ((cam duc) OR (cam xuc)) va hanh dai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ve ((cam duc) OR (cam xuc)) va hanh dai ((cuu tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu ve ((cam duc) OR (cam xuc)) va hanh dai ((cuu tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ve ((cam duc) OR (cam xuc)) va hanh dai ((cuu tre) or (cua te))*.