Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hai ve snippets" » "cuc hai ve snippets", "duc dai ve snippets", "duc hau ve snippets", "duc hoai ve snippets", "duc hai va snippets", "duc hai vu 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 hai ve 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 hai ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hai ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hai ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.