Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dac cong chi snippets" » "cac cong chi snippets", "duc cong chi snippets", "dai cong chi snippets", "dac cong khi snippets", "dac cong cho snippets", "dac con chi 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: (((("dac cong chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dac cong chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac cong chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac cong chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.