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