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