Perhaps you should try some spelling variations:
dinh tri » chinh tri
tu sach » thu sach, su sach, te sach
van hoi » van hoa, van hoc, van hoe
qua cau » quan cau, qua cac, qua ca
cau luc » cau truc, cau phuc
dinh vi » dinh ve, dinh viet, dinh thi
y lang » _ lang, tay lang, yen lang
o lang » hoa lang, hoi lang
luc va » duc va, tuc va, loc va
cua te » cua tu

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 lang) OR (o lang)) van hoi. hieu qua cau luc va ((dinh vi) or (dinh tri)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y lang) OR (o lang)) van hoi. hieu qua cau luc va ((dinh vi) OR (dinh tri)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y lang) OR (o lang)) van hoi. hieu qua cau luc va ((dinh vi) or (dinh tri)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y lang) OR (o lang)) van hoi. hieu qua cau luc va ((dinh vi) or (dinh tri)) cua te*.