Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers", "python using java slippers"
"he van trong slippery" » "he van truong slippery", "he vang trong slippery", "he ban trong slippery", "le van trong slippery", "ho van trong slippery", "ha van trong slippery", "he van trong slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets", "locating bug code slippers"

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