Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc hai con snippets" » "thuc thai con snippets", "tuc hai con snippets", "thu hai con snippets", "thuc phai con snippets", "thuc bai con snippets", "thuc hai son 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: (((("thuc hai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuc hai con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc hai con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc hai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.