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