Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi vu cong snippets" » "phi va cong snippets", "phi tu cong snippets", "phi cua cong snippets", "thi vu cong snippets", "phi xu cong 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 vu cong 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 vu cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi vu cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi vu cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.