Perhaps you should try some spelling variations:
"hoc nhanh cam snippets" » "hoc nganh cam snippets", "hoc phan cam snippets", "hoc nhanh cay snippets", "hoc nhanh tam snippets", "hoc nhanh cau snippets"
"dung java java snippets" » "dung va java snippets"
"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: (((("hoc nhanh cam snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc nhanh cam snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("hoc nhanh cam snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.