Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java grippers" » "python using data grippers", "python using java slippers"
"bai tran van slippery" » "bai toan van slippery", "ban tran van slippery", "bao tran van slippery", "bai luan van slippery", "bai tran van slippers"

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

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