Perhaps you should try some spelling variations:
"1998 brazilian central election" » "1998 brazilian scenario election", "1998 brazilian cerrado election", "1998 brazilian context election", "1998 brazilian central electron", "1998 brazilian central reflection", "1998 brazilian general election", "19th brazilian central election", "12th brazilian central election", "16th brazilian central election"
"1998 brazilian federal election" » "1998 brazilian general election", "1998 brazilian general elections", "19th brazilian federal election", "12th brazilian federal election", "16th brazilian federal election"
"18 brazilian federal election" » "18 brazilian general election", "18 brazilian general elections", "1 brazilian federal election", "13 brazilian federal election", "10 brazilian federal election"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("1998 brazilian central election") OR ((("1998 brazilian federal election") OR ("18 brazilian federal election")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"1998 brazilian central election\") or (((\"1998 brazilian federal election\") OR (\"18 brazilian federal election\"))))".
• Removing quotes may allow a broader search: (( 1998 brazilian central election ) or ((( 1998 brazilian federal election ) OR ( 18 brazilian federal election )))).
• Adding a wildcard symbol may retrieve word variants: (("1998 brazilian central election") or ((("1998 brazilian federal election") OR ("18 brazilian federal election"))))*.