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