Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wei yang con snippets" » "wei tang con snippets", "wei fang con snippets", "wei wang con snippets", "wei yang kon snippets", "wei dang cong snippets", "wei 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: (((("wei 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: (((("wei yang con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wei yang con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wei yang con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.