Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"fan wu cong snippets" » "fan tu cong snippets", "fan vu cong snippets", "fan su cong snippets", "can wu cong snippets", "lan wu 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: (((("fan wu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("fan wu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( fan wu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("fan wu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.