Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan le cong snippets" » "dan len cong snippets", "dan te cong snippets", "dan ve cong snippets", "ban le cong snippets", "van le 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: (((("dan le 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: (((("dan le cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan le cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan le cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.