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