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