Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi cua dem snippets" » "hoi cua dem snippets", "dai cua dem snippets", "dong cua dem snippets", "doi cua dam snippets", "doi nua dem snippets", "doi cua dieu 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 cua dem 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 cua dem snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi cua dem snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi cua dem snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.