MDTF - WordPress Meta Data Filter & Taxonomies Filter

Separates the phrase into search words that allows to perform a search regardless of the location of these words in the phrase. By default is TRUE.

Examples:

• If to set FALSE will be found posts with ONLY exact phrase, for example 'Hello World' - all posts with exact phrase only will be found.
  
  add_filter('mdf_txtsearch_some_words_behavior', function($default) { return 0; });

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  add_filter('mdf_txtsearch_some_words_behavior', function($default) {     return 0; });

• If leave TRUE and enter 'Hello World' - will be found all posts with 'Hello World' + ALL with 'Word Hello':
  
  add_filter('mdf_txtsearch_some_words_behavior', function($default) { return 1; });

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  add_filter('mdf_txtsearch_some_words_behavior', function($default) {     return 1; });

• If leave TRUE and enter 'Hello World' - will be found all posts with 'Hello World' + ALL with 'Word Hello' and any posts with words from the phrase IF mdf_txtsearch_some_words_condition will be set to 'OR': (by default in mdf_txtsearch_some_words_condition is 'AND')
  
  add_filter('mdf_txtsearch_some_words_behavior', function($default) { return 1; }); add_filter('mdf_txtsearch_some_words_condition', function($default) { return 'OR'; });

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  add_filter('mdf_txtsearch_some_words_behavior', function($default) {     return 1; }); add_filter('mdf_txtsearch_some_words_condition', function($default) {     return 'OR'; });

From v.2.2.2/1.2.2