Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lon vu cong snippets" » "lon va cong snippets", "lon tu cong snippets", "lon cua cong snippets", "long vu cong snippets", "lo vu cong 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: (((("lon vu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lon vu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lon vu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lon vu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.