Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"xuong dan de snippets" » "xuong dan code snippets", "huong dan de snippets", "xuong san de snippets", "tuong dan de snippets", "xuong dan den snippets", "xuong dang de snippets", "xuong van de 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: (((("xuong dan 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: (((("xuong dan de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( xuong dan de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuong dan de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.