Perhaps you should try some spelling variations:
"doan dien tro snippets" » "toan dien tro snippets", "doan dieu tro snippets", "doan thien tro snippets", "doan dien tao snippets", "doan dien trong snippets", "doan dien trac snippets", "doan dien tro slippers"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets", "python using sat 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: (((("doan dien tro snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan dien tro snippets") OR ("python using sat snippets"))) OR ("locating bug code snippets")).
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