Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lei yang con snippets" » "lai yang con snippets", "lei wang con snippets", "wei yang con snippets", "lei yang kon snippets", "lei dang cong snippets", "lei hang 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: (((("lei yang con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lei yang con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lei yang con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lei yang con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.