Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van den cung snippets" » "van den vung snippets", "van den cong snippets", "van den muong snippets", "van de cung snippets", "van der cung snippets", "ban den cung 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: (((("van den cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van den cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van den cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van den cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.