Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"khan hat van snippets" » "phan phat van snippets", "khan than van snippets", "nhan chat van snippets", "khan hoat van snippets", "khan ha van snippets", "khan hai van snippets", "khan hat van 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: (((("khan hat van snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khan hat van snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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