Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu hoat do snippets" » "hieu hoa do snippets", "thien hoat do snippets", "hieu luat do snippets", "hieu hoat doi snippets", "hieu hat do snippets", "hieu hoat ho 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: (((("hieu hoat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu hoat do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu hoat do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu hoat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.