Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"dong trinh ly snippets" » "cong trinh ly snippets", "dong tinh ly snippets", "dong tranh ly snippets", "dong trinh ky snippets", "dong trinh do snippets", "dong trinh tu snippets", "dong trinh ly slippers"
"dung using data snippets" » "dung ung data snippets", "dung sinh data snippets", "dung uong data snippets", "dung using java snippets", "dung using sat snippets", "dung missing data snippets", "dung using data slippers"

Try widening your search to All Fields.

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