Perhaps you should try some spelling variations:
"python using java slippers" » "python using data slippers", "python using java grippers"
"te ngan dan slippery" » "te ngan danh slippery", "te nhan dan slippery", "te ngan han slippery", "tu ngan dan slippery", "tai ngan dan 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: (((("te ngan dan slippery") or ("python using java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("te ngan dan slippery") OR ("python using java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( te ngan dan slippery ) or ( python using java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("te ngan dan slippery") or ("python using java slippers"))) or ("locating bug code snippets"))*.