Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"jun zhang di snippets" » "jun zhang code snippets", "juan zhang di snippets", "jing zhang di snippets", "yuan zhang di snippets", "jun hang di snippets", "jun zhang xin snippets", "jun hang doi 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: (((("python using java snippets") or ("jun zhang di snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("jun zhang di snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( jun zhang di snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("jun zhang di snippets"))) or ("locating bug core snippets"))*.