Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi dong cua snippets" » "doi dong code snippets", "doi duong cua snippets", "doi song cua snippets", "hoi dong cua snippets", "doi dung cua snippets", "doi cong cua snippets", "doi huong cua 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 dong cua 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 dong cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi dong cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi dong cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.