Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chuc hau den snippets" » "chuc hach den snippets", "chuc hanh den snippets", "chuc hoat den snippets", "chuc cau den snippets", "chuc thau dien snippets", "chuc 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: (((("chuc 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: (((("chuc hau den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chuc hau den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuc hau den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.