Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoang dan da snippets" » "hoang dang da snippets", "hoang van da snippets", "hoang san da snippets", "hoang dan dat snippets", "hoang dan ca snippets", "hoang dan va 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: (((("hoang dan 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: (((("hoang dan da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang dan da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang dan da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.