Perhaps you should try some spelling variations:
"python using sat grippers" » "python using soft grippers", "python using data grippers", "python using a grippers", "python using raw grippers"
"_ trieu thi slippery" » "_ tieu thi slippery", "2 trieu thi slippery", "4 trieu thi slippery", "_ trieu thi 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: (((("python using sat grippers") or ("_ trieu thi slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using sat grippers") OR ("_ trieu thi slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using sat grippers ) or ( _ trieu thi slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using sat grippers") or ("_ trieu thi slippery"))) or ("locating bug code snippets"))*.