Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"501 cao anh snippets" » "501 cau anh snippets", "501 cao dang snippets", "501 cao tang snippets", "501 cao bang snippets", "501 cao anh slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("501 cao anh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("501 cao anh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( 501 cao anh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("501 cao anh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.