Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"lap lan hung snippets" » "lap van hung snippets", "lap luan chung snippets", "lap lan phuong snippets", "lap luan hung snippets", "lap lanh hung snippets", "lap ban hung snippets", "lap lan hung slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("lap lan hung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lap lan hung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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