Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan danh du snippets" » "dan danh code snippets", "van danh du snippets", "han danh du snippets", "ban danh du snippets", "dan danh dau snippets", "dan danh tu snippets", "dan dinh du 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: (((("dan danh du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan danh du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan danh du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan danh du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.