Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap xac cao snippets" » "phap cac cao snippets", "phap khac cao snippets", "phap cach cao snippets", "phap xa cao snippets", "phap bac cao snippets", "phap mach cao snippets"
"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: (((("phap xac cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap xac cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("phap xac cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.