Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam dam cong snippets" » "nam dai cong snippets", "nam dam dong snippets", "nam dang cong snippets", "nam dan cong snippets", "nam da cong snippets", "nam dao 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: (((("nam dam 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: (((("nam dam cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam dam cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam dam cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.