Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"dung cau thi slippers" » "dung chau thi slippers", "dung cu thi slippers", "dung cac thi slippers", "dung cau thi slippery"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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: (((("python using java grippers") or ("dung cau 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 ("dung cau thi slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java grippers ) or ( dung cau thi slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java grippers") or ("dung cau thi slippers"))) or ("locating bug code snippets"))*.