Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong yang o2 snippets" » "dong yang code snippets", "dong bang o2 snippets", "dong nang o2 snippets", "dong quang o2 snippets", "dong hang o2 snippets", "dong yang con snippets", "dong yang kon 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 yang o2 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 yang o2 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong yang o2 snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong yang o2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.