Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi tang cho snippets" » "doi tang code snippets", "do tang cho snippets", "doi mang cho snippets", "doi tan cho snippets", "doi trang cho snippets", "doi sang cho snippets", "doi hang 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: (((("python using java snippets") or ("doi tang cho snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("doi tang cho snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doi tang cho snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doi tang cho snippets"))) or ("locating bug core snippets"))*.