Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dao bai hung snippets" » "dao mai hung snippets", "dao ba hung snippets", "dao tai hung snippets", "cao bai hung snippets", "dao hai hung snippets", "dao lai hung snippets", "dao bai hung slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dao bai hung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
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