Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den voi chat snippets" » "den voi nhat snippets", "den van chat snippets", "den hop chat snippets", "dien voi chat snippets", "den coi chat snippets", "den vai 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: (((("den voi 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: (((("den voi chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den voi chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den voi chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.