Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"qui trinh ky slippers" » "qua trinh ky slippers", "quy trinh ky slippers", "thi trinh ky slippers", "qui 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 ("qui 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 ("qui trinh ky slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java slippery ) or ( qui trinh ky slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java slippery") or ("qui trinh ky slippers"))) or ("locating bug code snippets"))*.