Perhaps you should try some spelling variations:
"lochating bug code snippets" » "locating bug code snippets", "lochating bug core snippets"
"python using java snippets" » "python using data snippets"
"toan ho doi snippets" » "toan hoc doi snippets", "toan khoa doi snippets", "toan cao doi snippets", "toan cho doi snippets", "toan hoa doi snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("toan ho doi snippets") or ("python using java snippets"))) or ("lochating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan ho doi snippets") OR ("python using java snippets"))) OR ("lochating bug code snippets")).
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