Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"tao trinh ky slippers" » "tao tinh ky slippers", "tho trinh ky slippers", "giao trinh ky slippers", "tao trinh ky 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 ("tao trinh ky slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java slippery") OR ("tao trinh ky slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java slippery ) or ( tao trinh ky slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java slippery") or ("tao trinh ky slippers"))) or ("locating bug code snippets"))*.