Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc lam son snippets" » "duoc pham son snippets", "duoc ly son snippets", "duoc li son snippets", "duoc lam san snippets", "duoc lam sang snippets", "duoc lang 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: (((("duoc lam son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc lam son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc lam son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc lam son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.