Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"len cho can snippets" » "len cho code snippets", "len choi can snippets", "nen cho can snippets", "ben cho can snippets", "len cho cac snippets", "len cho phan snippets", "len cho cong snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("len cho can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len cho can snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( len cho can snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len cho can snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.