Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong hau den snippets" » "dong ha den snippets", "dong hai den snippets", "song hau den snippets", "dong cau den snippets", "dong thau dien snippets", "dong thai den 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: (((("dong hau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong hau den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hau den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.