Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cheng le co snippets" » "cheng lu co snippets", "cheng lin co snippets", "cheng wen co snippets", "cheng ly co snippets", "cheng de co snippets", "cheng ke co 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 le co 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 le co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cheng le co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cheng le co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.