Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"troi cuu tao snippets" » "troi cua tao snippets", "tri cua tao snippets", "tro cua tao snippets", "troi cau tao snippets", "troi cuu dao snippets", "troi cuu tac snippets", "troi cuu tao slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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