Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham do loi snippets" » "pham doi loi snippets", "pham mo loi snippets", "pham o loi snippets", "pham co loi snippets", "pham do moi snippets", "pham do voi 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 do loi 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 do loi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham do loi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham do loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.