Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"_ trieu thi slippers" » "_ tieu thi slippers", "2 trieu thi slippers", "4 trieu thi slippers", "_ trieu thi slippery"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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