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