Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi tuan cu snippets" » "do tuan cu snippets", "doi tan cu snippets", "doi tuong cu snippets", "doi tuan tu snippets", "doi quan cua snippets", "doi tuan thu 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: (((("doi tuan cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi tuan cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi tuan cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tuan cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.