Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc cong son snippets" » "hoc cong son snippets", "truoc cong son snippets", "thuoc cong son snippets", "toc cong san snippets", "toc cong so snippets", "toc dong son 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 cong son 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 cong son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc cong son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc cong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.