Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi quoc oai snippets" » "doi cuoc oai snippets", "voi quoc oai snippets", "dong quoc oai snippets", "doi quoc hoi 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 quoc 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: (((("doi quoc oai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi quoc oai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi quoc oai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.