Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chau hap den snippets" » "khau nhap den snippets", "chap phap den snippets", "chau nhan den snippets", "chau cap den snippets", "chau hap dan snippets", "chau hau 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: (((("chau hap 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: (((("chau hap den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chau hap den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chau hap den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.