Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nom dan dong snippets" » "nom van dong snippets", "nom dan dung snippets", "nom dao dong snippets", "nhom dan dong snippets", "nam dan dong 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: (((("nom dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nom dan dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nom dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nom dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.