Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao duy co snippets" » "dao duc co snippets", "do duy co snippets", "dao duy ro snippets", "dao duy so snippets", "dao huy co 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: (((("dao duy co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao duy co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao duy co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao duy co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.