Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoi dan soc snippets" » "cuoi dan soc snippets", "doi dan soc snippets", "duoc dan soc snippets", "duoi dan toc snippets", "duoi dan hoc snippets", "duoi 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: (((("duoi 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: (((("duoi dan soc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoi dan soc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoi dan soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.