Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao pham doi snippets" » "cao phan doi snippets", "cau pham doi snippets", "hao pham doi snippets", "cao pham do snippets", "cao pham moi snippets", "cao pham voi 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: (((("cao pham doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao pham doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("cao pham doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.