Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua mot cong snippets" » "qua moi cong snippets", "qua hoc cong snippets", "qua bo cong snippets", "quan mot cong snippets", "cua mot cong snippets", "qua tot 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: (((("qua mot 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: (((("qua mot cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua mot cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua mot cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.