Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc la chi snippets" » "duc lai chi snippets", "duc lam chi snippets", "duc lan chi snippets", "duc ly chi snippets", "duc a chi snippets", "duc ca chi 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 la chi 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 la chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc la chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc la chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.