Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoang ha den snippets" » "hoang hai den snippets", "hong ha den snippets", "hoang nham den snippets", "hoang hau den snippets", "hoang va den snippets", "hoang ra den 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 ha 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: (((("hoang ha den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang ha den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang ha den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.