Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan luan doi snippets" » "dan luan code snippets", "doanh luan doi snippets", "dung luan doi snippets", "tang luan doi snippets", "dan quan doi snippets", "dan lua doi snippets", "dan luan gioi 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: (((("python using java snippets") or ("dan luan doi snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dan luan doi snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dan luan doi snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dan luan doi snippets"))) or ("locating bug core snippets"))*.