Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc lam don snippets" » "duoc lam don snippets", "duc nam don snippets", "luc lam don snippets", "duc lam dong snippets", "duc la don snippets", "duc lam son 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 lam don 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 lam don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc lam don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc lam don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.