Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi thi hoan snippets" » "doi thi code snippets", "doi thi hoa snippets", "doi thi hanh snippets", "doi thi hong snippets", "doi thoi hoan snippets", "do thi hoan snippets", "doi khi hoan 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: (((("doi thi hoan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi thi hoan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi thi hoan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi thi hoan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.