Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong va non snippets" » "dung va non snippets", "dong ha non snippets", "luong va non snippets", "dong va nong snippets", "dong a non snippets", "dong va nen 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: (((("dong va non snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong va non snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong va non snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong va non snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.