Perhaps you should try some spelling variations:
"trinh phap code snippets" » "trinh phan code snippets", "trinh han code snippets", "trinh chat code snippets", "trinh phap che snippets", "trinh phap cong snippets", "trinh phap coc snippets", "trinh phap code slippers"
"ung dung code snippets" » "ung dung cong snippets", "ung dung co snippets", "ung dung de snippets", "ung dung code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh phap code snippets") or ("ung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh phap code snippets") OR ("ung dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh phap code snippets ) or ( ung dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh phap code snippets") or ("ung dung code snippets"))) or ("locating bug code snippets"))*.