Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoang van ly slippers" » "hang va ly slippers", "hoang van ky slippers", "hoang van le slippers", "hoang van lu slippers", "hoang van ly slippery", "hoang van ly grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

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