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