Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong vat uon snippets" » "dong va uon snippets", "dong von uon snippets", "dong ha uon snippets", "dong vat con snippets", "dong vat duong 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 uon 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 uon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong vat uon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong vat uon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.