Perhaps you should try some spelling variations:
"locating bung code snippets" » "locating bug code snippets", "locating bung code slippers"
"danh cho trinh snippets" » "danh co trinh snippets", "danh tho trinh snippets", "danh cho sinh snippets", "doanh cho trinh snippets", "dan cho trinh snippets", "dinh cho trinh snippets", "danh cho trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"

Try widening your search to All Fields.

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