Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"va chat hung snippets" » "va chau hung snippets", "va chat luong snippets", "va chat quang snippets", "van chat hung snippets", "va phat hung snippets", "va cham hung snippets", "va chat 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: (((("va chat hung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va chat hung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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