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