Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"xuan nam de snippets" » "xuan nam code snippets", "quang nam de snippets", "xuan nang de snippets", "xuan nhan de snippets", "xuan nam da snippets", "xuan nam do snippets", "xuan nam 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: (((("xuan nam de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan nam de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( xuan nam de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan nam de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.