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