Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hung va nghe snippets" » "huong va nghe snippets", "hung van nghe snippets", "hang va nghe snippets", "hung ve nghe snippets", "hung va nghi 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 va nghe 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 va nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hung va nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung va nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.