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