Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khe thi cong snippets" » "khe tai cong snippets", "khe thien cong snippets", "ke thi cong snippets", "nghe thi cong snippets", "phe thai cong 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: (((("khe thi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khe thi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khe thi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khe thi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.