Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi hoi cho snippets" » "doi hoi code snippets", "doi thoi cho snippets", "doi voi cho snippets", "doi moi cho snippets", "doi hoi chu snippets", "doi hoi co snippets", "doi hoc cho 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 hoi cho 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 hoi cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi hoi cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi hoi cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.