Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap nam cao snippets" » "ha nam cao snippets", "hai nam cao snippets", "dap nam cao snippets", "hap nam sao snippets", "hap nam giao 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: (((("hap nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hap nam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap nam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap nam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.