Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc cong con snippets" » "duc cong code snippets", "duc cuong con snippets", "dung cong con snippets", "nuoc cong con snippets", "duc cong cong snippets", "duc cong co snippets", "duc cong lon 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 ("duc cong con snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("duc cong con snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duc cong con snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duc cong con snippets"))) or ("locating bug core snippets"))*.