Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dac cho toc snippets" » "day cho toc snippets", "danh cho toc snippets", "dac cho hoc snippets", "dac cao toc snippets", "dac cho toa 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: (((("dac cho toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dac cho toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac cho toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac cho toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.