Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong va du snippets" » "dong va du snippets", "cong ha du snippets", "cong tac du snippets", "cong va dau snippets", "cong va su snippets", "cong va tu 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 du 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 du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong va du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong va du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.