Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc gian cua snippets" » "toc giay cua snippets", "toc gia cua snippets", "toi gian cua snippets", "toc gian xu snippets", "toc ban cua 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: (((("toc gian cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc gian cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc gian cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc gian cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.