Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cheng lu cac snippets" » "cheng lin cac snippets", "zheng liu cac snippets", "chen yu cac snippets", "cheng tu cac snippets", "cheng li cac snippets", "cheng ly cac 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 lu cac 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 lu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cheng lu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cheng lu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.