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