Perhaps you should try some spelling variations:
"qua nhat hanh snippets" » "qua nhat ban snippets", "qua hoat hanh snippets", "luc nhat hanh snippets", "qua hai hanh snippets", "qua nhat hanh 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", "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: (((("qua nhat hanh snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua nhat hanh snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("qua nhat hanh snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.