Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"so thai cao snippets" » "so tai cao snippets", "so thoai cac snippets", "so thuat cao snippets", "do thai cao snippets", "so hai cao snippets"
"locating bug code snippets" » "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: (((("python using java snippets") or ("so thai cao snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("so thai cao snippets"))) OR ("locating bug code snippets")).
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