Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"ke nam trong grippers" » "ke nam trung grippers", "ke cay trong grippers", "ke dam trong grippers", "he nam trong grippers", "ke nan trong grippers", "ke nam trong 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: (((("ke nam trong grippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ke nam trong grippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ke nam trong grippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ke nam trong grippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.