Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son pham doc snippets" » "san pham doc snippets", "cong pham doc snippets", "song cham doc snippets", "son pham duc snippets", "son pham dac snippets", "son pham do 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: (((("son pham doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("son pham doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son pham doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son pham doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.