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