Perhaps you should try some spelling variations:
dinh tri » chinh tri
te sach » toc sach
dinh vi » dinh ve, dinh viet, dinh thi
vu cham » va cham, vu kham, tu cham
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
loc va » hoc va, luc va
va cao » va cac, va co, va dao
ma hoi » mai hoi, xa hoi, ma hoa

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 y nang ma hoi. hieu ((va cao) or (vu cham)) loc va ((dinh vi) or (dinh tri)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu ((va cao) OR (vu cham)) loc va ((dinh vi) OR (dinh tri)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu ((va cao) or (vu cham)) loc va ((dinh vi) or (dinh tri)) cuu tre*.