Perhaps you should try some spelling variations:
"duc trinh code snippets" » "duc trinh cong snippets", "duc trinh co snippets", "duc trinh cad snippets", "duc thinh code snippets", "doc trinh code snippets", "qua trinh code snippets", "duc trinh code slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 a snippets") or ("duc trinh code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("duc trinh code snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("duc trinh code snippets"))) or ("locating bug code snippets"))*.