Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"lao va ngan snippets" » "lao van ngan snippets", "lao vu ngan snippets", "lao va ngay snippets", "tao va ngan snippets", "cao va ngan snippets", "bao va ngan snippets", "lao va ngan 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: (((("lao va ngan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lao va ngan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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