Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong su doc snippets" » "dong su code snippets", "dang su doc snippets", "dong tu doc snippets", "dong luc doc snippets", "dong nu doc snippets", "dong su doi snippets", "dong su hoc 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 su doc 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 su doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong su doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong su doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.