Perhaps you should try some spelling variations:
"python using java slippers" » "python using data slippers", "python using java grippers"
"cau truc dan slippery" » "cau thuc dan slippery", "cau tuc dan slippery", "cau truc ban 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: (((("cau truc 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: (((("cau truc dan slippery") OR ("python using java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cau truc dan slippery ) or ( python using java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cau truc dan slippery") or ("python using java slippers"))) or ("locating bug code snippets"))*.