Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi van cac snippets" » "phi san cac snippets", "thi van cac snippets", "phi va cac snippets", "phi van hac snippets", "phi van cau snippets", "phi van bac 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: (((("phi van cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi van cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi van cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi van cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.