Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co dai son snippets" » "co dai so snippets", "co doi song snippets", "co thai son snippets", "co dan son snippets", "do dai 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: (((("co dai 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: (((("co dai son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co dai son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co dai son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.