Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"nang lam trinh snippets" » "nang lap trinh snippets", "nang lam tinh snippets", "nang tao trinh snippets", "nong lam trinh snippets", "bang lam trinh snippets", "mang lam trinh snippets", "nang lam 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: (((("nang lam trinh snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang lam trinh snippets") OR ("dung java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( nang lam trinh snippets ) or ( dung java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang lam trinh snippets") or ("dung java java snippets"))) or ("locating bugs code snippets"))*.