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