Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"lua dac sach snippets" » "lua dac sac snippets", "lua doc sach snippets", "lua dat sach snippets", "luan dac sach snippets", "lua dao sach snippets", "luat dat sach snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("lua dac sach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lua dac sach snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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