Perhaps you should try some spelling variations:
"phan duoc sio2 snippets" » "phan duc sio2 snippets", "phan quoc sio2 snippets", "nhan duoc sio2 snippets", "phan duoc si snippets", "phan duoc sieu snippets", "phan duoc 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 duoc 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 duoc 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 duoc sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.