Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van dam chat snippets" » "van lam chat snippets", "van cao chat snippets", "van van chat snippets", "van nam chat snippets", "van dao chat snippets", "van dau chat 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 dam chat 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 dam chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van dam chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dam chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.