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