Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khan cua soc snippets" » "nhan cua soc snippets", "than cua soc snippets", "han cua soc snippets", "khan cua hoc snippets", "khan cu soc snippets", "khan cua loc 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: (((("khan cua 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: (((("khan cua soc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khan cua soc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khan cua soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.