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