Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban phan le snippets" » "ban phap le snippets", "van phan le snippets", "ban than le snippets", "ban pham le snippets", "ban phan mem snippets", "ban phan lap 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: (((("ban phan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban phan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban phan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban phan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.