Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc quan doi snippets" » "tac quan doi snippets", "hoc quan doi snippets", "toc qua doi snippets", "toc quan tri snippets", "toc quan li 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 quan doi 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 quan doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc quan doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc quan doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.