Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi deu cong snippets" » "doi den cong snippets", "doi deu mong snippets", "doi lieu cong snippets", "doi dau cong snippets", "doi de cong snippets", "moi dieu 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: (((("doi deu 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: (((("doi deu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi deu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi deu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.