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