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