Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hieu van soa snippets" » "hieu van code snippets", "hieu va soa snippets", "thien van soa snippets", "lieu va soa snippets", "hieu van hoa snippets", "hieu van son snippets", "hieu van khoa 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: (((("hieu van soa snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu van soa snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("hieu van soa snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.