Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"bac xa khanh snippets" » "bac xa thanh snippets", "bac van khanh snippets", "bac dat khanh snippets", "bac ha khanh snippets", "tac xa khanh snippets", "buc xa khanh snippets", "bac xa khanh slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("bac xa khanh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bac xa khanh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bac xa khanh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
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