Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tri chat van snippets" » "tra chat van snippets", "trinh chat van snippets", "tri nhan van snippets", "tri chat va snippets", "tri chat ban snippets", "tri chat ran snippets"

Try widening your search to All Fields.

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