Perhaps you should try some spelling variations:
"chu duc toan snippets" » "chu duc code snippets", "chu duc tan snippets", "chu duc ton snippets", "chu duc hoan snippets", "thu duc toan snippets", "chua duoc toan snippets", "cuu duoc toan snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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 java snippets") or ("chu duc toan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("chu duc toan snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("chu duc toan snippets"))) or ("locating bug core snippets"))*.