Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong tu oai snippets" » "cong ty oai snippets", "cong cu oai snippets", "dong tu oai snippets", "cong tu hoai snippets", "cong tu tai snippets", "cong tu bai 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: (((("cong tu oai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong tu oai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tu oai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tu oai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.