Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sang cua he snippets" » "mang cua he snippets", "song cua he snippets", "hang cua he snippets", "sang cua che snippets", "sang cua te snippets", "sang cua le 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: (((("sang cua he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sang cua he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sang cua he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sang cua he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.