Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao cuong ho snippets" » "dai cuong ho snippets", "doan cuong ho snippets", "cao cong ho snippets", "dao tuong ho snippets", "dao cuong vo snippets", "dao duong ho 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: (((("dao cuong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao cuong ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("dao cuong ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.