Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong doi deu snippets" » "cong doi code snippets", "vong doi deu snippets", "cong dot deu snippets", "cong goi deu snippets", "cong doi dau snippets", "cong doi de snippets", "cong moi dieu snippets"
"python using java snippets" » "python using data 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: (((("cong doi deu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong doi deu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("cong doi deu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.