Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu luc cao snippets" » "hieu luc cao snippets", "lieu luu cao snippets", "tieu luc cao snippets", "lieu luc cho snippets", "lieu luc canh snippets", "lieu quoc 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: (((("lieu luc 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: (((("lieu luc cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu luc cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu luc cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.