Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao duy khoe snippets" » "dao suc khoe snippets", "dao huy khoa snippets", "dao duy hue snippets", "dao duc khoe snippets", "do duy khoe 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 khoe 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 khoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao duy khoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao duy khoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.