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