Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chuc danh do snippets" » "chuc nganh do snippets", "thuc hanh do snippets", "chuc nang do snippets", "chuc dang do snippets", "chuc danh co snippets", "chuc danh di snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chuc danh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chuc danh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuc danh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.