Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don va he snippets" » "doan va he snippets", "dong va he snippets", "don vi he snippets", "don va che snippets", "don va ghe snippets", "don va de 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: (((("don va he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don va he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don va he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don va he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.