Perhaps you should try some spelling variations:
"phan quan sio2 snippets" » "phan quang sio2 snippets", "phap quan sio2 snippets", "pham quang sio2 snippets", "phan quan so snippets", "phan quan sio2 slippers"
"python using a snippets" » "python using a 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.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("phan quan sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan quan sio2 snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("phan quan sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.