Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pho dan soc snippets" » "pho danh soc snippets", "tho dan soc snippets", "pho da soc snippets", "pho dan toc snippets", "pho dan hoc snippets", "pho dan so snippets"
"locating bug code snippets" » "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: (((("pho dan soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pho dan soc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pho dan soc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pho dan soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.