Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hung dan den snippets" » "huong dan den snippets", "dung dan den snippets", "tung dan den snippets", "hung ban den snippets", "hung van den snippets", "hung dan dung 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: (((("hung dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hung dan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hung dan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.