Perhaps you should try some spelling variations:
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"cua van canh slippers" » "cua van anh slippers", "cua van hanh slippers", "cua van manh slippers", "cua ban canh slippers", "cua dan canh slippers", "cua vat canh slippers", "cua van canh slippery", "cua van canh grippers"
"locating bug code snippets" » "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: (((("cua van canh slippers") or ("python using data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua van canh slippers") OR ("python using data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua van canh slippers ) or ( python using data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua van canh slippers") or ("python using data snippets"))) or ("locating bug code snippets"))*.