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