Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc thang da snippets" » "duc tan da snippets", "duc hung da snippets", "duc thang va snippets", "duc tang da snippets", "duc thanh dat 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: (((("duc thang da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc thang da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc thang da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc thang da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.