Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang vat lon snippets" » "dang van lon snippets", "dong vat lon snippets", "dang nhat lon snippets", "dang vat con snippets", "dang van long snippets", "dang vat dong 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: (((("dang vat lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang vat lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang vat lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang vat lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.