Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cheng su cao snippets" » "cheng lu cao snippets", "cherng hsu cao snippets", "thong su cao snippets", "cheng cu cao snippets", "cheng vu cao snippets", "cheng su 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 su cao 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 su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cheng su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cheng su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.