Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dac hang hai snippets" » "dac thang hai snippets", "dat hang hai snippets", "dac hung hai snippets", "dac hoang hai snippets", "dac hang tai snippets", "dac thanh hai snippets", "dac hang hai 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: (((("dac hang hai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dac hang hai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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