Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cheng ve du snippets" » "chung ve du snippets", "cheng wen du snippets", "cuong ve du snippets", "cheng ve su snippets", "cheng te du snippets", "cheng va du 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 ve du 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 ve du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cheng ve du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cheng ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.