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