Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"moi doc sach snippets" » "moi hoc sach snippets", "moi toc sach snippets", "moi nuoc sach snippets", "moi doi sach snippets", "moi loc sach snippets", "moi doc sach 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: (((("python using java snippets") or ("moi doc sach snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("moi doc sach snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( moi doc sach snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("moi doc sach snippets"))) or ("locating bug code snippets"))*.