Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xac pham moi snippets" » "tac pham moi snippets", "san pham moi snippets", "duc pham moi snippets", "xac pham mo snippets", "xac pham doi snippets", "xac pham voi 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: (((("xac pham moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xac pham moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xac pham moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xac pham moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.