Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"giai san lua snippets" » "giai han lua snippets", "giai doan lua snippets", "giang san lua snippets", "giai san luan snippets", "giai san cua snippets", "giai san xuat snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("giai san lua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
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