Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pha nghe so snippets" » "pham nghe so snippets", "pho nghe so snippets", "thai nghe so snippets", "pha nghe son snippets", "pha nghe co snippets", "pha nghiep so 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: (((("pha nghe so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pha nghe so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pha nghe so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha nghe so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.