Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong che ho snippets" » "dong chen ho snippets", "duong che ho snippets", "dong cho ho snippets", "dong che do snippets", "dong he ho snippets", "dong che khoa 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: (((("dong che ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong che ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong che ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong che ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.