Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong chen he snippets" » "dong chen code snippets", "dong chan he snippets", "dong che he snippets", "dong chuyen he snippets", "dong chen chen snippets", "dong chen huei snippets", "dong chuan he 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 ("dong chen he snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dong chen he snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dong chen he snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dong chen he snippets"))) or ("locating bug core snippets"))*.