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