Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe tri hoi snippets" » "khoe tre hoi snippets", "khoe tai hoi snippets", "khoa tri hoi snippets", "khoe tri hoc snippets", "khoe tri doi snippets", "khoe tri moi 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: (((("khoe tri hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe tri hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("khoe tri hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.