Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi duy so snippets" » "do duy so snippets", "doi day so snippets", "doi quy so snippets", "doi duy son snippets", "doi duc so snippets", "doi duy ro 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: (((("doi duy so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi duy so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi duy so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi duy so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.