Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa cap phi slippers" » "khoa cam phi slippers", "khoa tap phi slippers", "khoa can phi slippers", "khoa cap phoi slippers", "khoa chau phi slippers", "khoa cap phan slippers", "khoa cap phi slippery", "khoa cap phi grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("khoa cap phi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa cap phi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("khoa cap phi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.