Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han do co snippets" » "phan do co snippets", "ban do co snippets", "van do co snippets", "han do cao snippets", "han vo co snippets", "han do bo 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: (((("han do co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han do co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han do co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han do co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.