Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hoi dong snippets" » "duc hop dong snippets", "duc hoat dong snippets", "duc ha dong snippets", "duoc hoi dong snippets", "duc hoa dong snippets", "duc loi dong 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: (((("duc hoi dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hoi dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hoi dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hoi dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.