Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc bach dan slippers" » "doc sach dan slippers", "dong bach dan slippers", "doc hanh dan slippers", "doc bach dang slippers", "doc bac dan slippers", "doc bach van slippers", "doc bach dan slippery", "doc bach dan 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: (((("doc bach dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc bach dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc bach dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc bach dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.