Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc dan do snippets" » "duc dan code snippets", "duoc dan do snippets", "duc tan do snippets", "duc dai do snippets", "duc dang do snippets", "duc dan dao snippets", "duc doan do 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 dan do 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 dan do snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duc dan do snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duc dan do snippets"))) or ("locating bug core snippets"))*.