Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phac tao cao snippets" » "pham tai cao snippets", "nhan tao cao snippets", "phan tap cao snippets", "phac bao cao snippets", "phac toan cao 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: (((("phac tao cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phac tao cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phac tao cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phac tao cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.