Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi den cong snippets" » "phi dien cong snippets", "phi den dong snippets", "phi len cong snippets", "nhi den cong snippets", "thai den cong snippets", "phi tien 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: (((("phi den 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: (((("phi den cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi den cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi den cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.