Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung van vat slippers" » "duong van vat slippers", "dung va vat slippers", "dang van vat slippers", "dung van chat slippers", "dung nhan vat slippers", "dung van vat slippery", "dung van vat 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: (((("dung van vat slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung van vat slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dung van vat slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.