Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan song he snippets" » "phan cong he snippets", "phan xuong he snippets", "phan ung he snippets", "phan song ho snippets", "phan seong hee snippets", "phan song nhue 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: (((("phan song he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan song he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan song he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan song he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.