Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc phan cui snippets" » "dung phan cui snippets", "duc thang cui snippets", "duc phung cui snippets", "duc than cui snippets", "duc phan cung snippets", "duc phan tu 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: (((("duc phan cui snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc phan cui snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc phan cui snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc phan cui snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.