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