Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong soc tre snippets" » "cong so tre snippets", "cong suc tre snippets", "cong coc tre snippets", "cong moc tren snippets", "cong hoc tren 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: (((("cong soc tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong soc tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong soc tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong soc tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.