Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers"
"dung cho cau slippers" » "dung cho cac slippers", "dung co cau slippers", "dung cho chu slippers", "dung cho cau 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: (((("dung cho cau slippers") or ("python using java grippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cho cau slippers") OR ("python using java grippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cho cau slippers ) or ( python using java grippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cho cau slippers") or ("python using java grippers"))) or ("locating bug code snippets"))*.