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