Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"det hoc dung snippets" » "det hoc ung snippets", "det hoc dan snippets", "det hoc cong snippets", "de hoc dung snippets", "den hoc dung snippets", "dien hoc dung snippets", "det hoc dung 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: (((("det hoc dung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("det hoc dung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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