Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe moi le snippets" » "nghe noi le snippets", "nghe nuoi le snippets", "nghe hoa le snippets", "nghe moi ve snippets", "nghe moi la snippets", "nghe moi ke 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: (((("nghe moi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nghe moi le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe moi le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe moi le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.