Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuc toan ho snippets" » "duc toan ho snippets", "quoc toan ho snippets", "tich toan ho snippets", "tuc toan hoc snippets", "tuc toan khoa snippets", "tuc toan cao 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: (((("tuc toan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tuc toan ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuc toan ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuc toan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.