Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"do van trong grippers" » "do van truong grippers", "do vang trong grippers", "do ban trong grippers", "dao van trong grippers", "vo van trong grippers", "so van trong grippers", "do van trong slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets", "locating bug code slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("do van trong grippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("do van trong grippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do van trong grippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do van trong grippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.