Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham dat hoi snippets" » "pham dac hoi snippets", "pham dau hoi snippets", "pham nhat hoi snippets", "pham dat thoi snippets", "pham dai hoi snippets", "pham dan hoi 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: (((("pham dat hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham dat hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham dat hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham dat hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.