Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung thai do snippets" » "duong thai do snippets", "dung tai do snippets", "dung hai do snippets", "dung thay doi snippets", "dung thai den 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: (((("dung thai 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: (((("dung thai do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung thai do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung thai do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.