Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan kiem va slippers" » "phan kien va slippers", "phan mem va slippers", "van kiem va slippers", "phan kiem tra slippers", "phan nhiem va slippers", "phan kiem va slippery", "phan kiem 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: (((("phan kiem 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: (((("phan kiem va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan kiem va slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan kiem va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.