Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chuc danh de snippets" » "chuc danh code snippets", "chuc nganh de snippets", "thuc hanh de snippets", "chuc nang de snippets", "chuc hanh de snippets", "chuc dan de snippets", "chuc dang 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: (((("chuc danh 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: (((("chuc danh de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chuc danh de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuc danh de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.