Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong cong do snippets" » "dong cong code snippets", "duong cong do snippets", "dung cong do snippets", "dang cong do snippets", "dong cong dot snippets", "dong cuong do snippets", "dong cong so 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: (((("dong cong do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cong do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong cong do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cong do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.