Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nom dao dong snippets" » "nom lao dong snippets", "nom ha dong snippets", "nom bat dong snippets", "nam dao dong snippets", "nhom 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 dao 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 dao dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nom dao dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nom dao dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.