Perhaps you should try some spelling variations:
"1998 brazilian central election" » "1998 brazilian federal 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", "18 brazilian central election", "12th brazilian central election"
"1998 brazilian scenario election" » "1998 brazilian scenario selection", "1998 brazilian scenario detection", "1998 brazilian scenario section", "19th brazilian scenario election", "18 brazilian scenario election", "12th brazilian scenario election"

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"1998 brazilian central election\") OR (\"1998 brazilian scenario election\"))".
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