Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan vu hoat snippets" » "dan va hoat snippets", "dan ve hoat snippets", "dan vu hoan snippets", "doan vu hoat snippets", "dan su hoat 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 vu hoat 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 vu hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan vu hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan vu hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.