Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"from va cong snippets" » "from vat cong snippets", "from a cong snippets", "from oxa cong snippets", "from tai cong snippets", "from cua 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: (((("from va 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: (((("from va cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( from va cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("from va cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.