Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"thon thi van snippets" » "thon thoi van snippets", "thon chi van snippets", "thong thai van snippets", "thon thi lan snippets", "thon thi hanh snippets", "thon thi nang snippets"

Try widening your search to All Fields.

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