Perhaps you should try some spelling variations:
dinh tri » chinh tri
va dinh » van dinh, va kinh, va tinh
cau luc » cau truc, cau phuc
sach ky » sac ky, sach y, sach kem
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
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: te ((sach ky) OR (sach ty)) nang x hoi. hieu va ((cau luc) or (cam xuc)) va dinh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach ty)) nang x hoi. hieu va ((cau luc) OR (cam xuc)) va dinh tri cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach ty)) nang x hoi. hieu va ((cau luc) or (cam xuc)) va dinh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach ty)) nang x hoi. hieu va ((cau luc) or (cam xuc)) va dinh tri cua tre*.