Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham dan co snippets" » "nam dan co snippets", "hat dan co snippets", "hai dan co snippets", "ham dan cho snippets", "ham dang co snippets", "ham danh co 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: (((("ham dan 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: (((("ham dan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham dan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham dan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.