Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tan van sung snippets" » "tan van dung snippets", "tan van hung snippets", "tan van duong snippets", "tran van sung snippets", "tang van sung snippets", "luan van sung snippets"

Try widening your search to All Fields.

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