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