Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu dao ve snippets" » "lieu dao ve snippets", "hieu dac ve snippets", "chieu cao ve snippets", "hieu bao ve snippets", "hieu dap ve snippets", "hieu dau ve 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: (((("hieu dao ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu dao ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu dao ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu dao ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.