Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"trac da cua snippets" » "trac da code snippets", "trac dia cua snippets", "tac da cua snippets", "trai dat cua snippets", "trac dai cua snippets", "trac day cua snippets", "trac dan cua snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trac da cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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