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