Perhaps you should try some spelling variations:
"pham tu 3 snippets" » "phan tu 3 snippets", "pham thi 3 snippets", "pham tai 3 snippets", "pham thu 3 snippets", "pham tu 23 snippets", "pham tu 31 snippets", "pham tu 3 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: (((("pham tu 3 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham tu 3 snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham tu 3 snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham tu 3 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.