Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"co dat lanh grippers" » "co dat anh grippers", "co dau lanh grippers", "co hat lanh grippers", "coc dat lanh grippers", "co dan lanh grippers", "co dot lanh grippers", "co dat lanh slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets", "locating bug code slippers"

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