Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan xuat o2 snippets" » "phan xuan o2 snippets", "san xuat o2 snippets", "phan xay o2 snippets", "phan xuat mot snippets", "phan xuat gom snippets", "phan xuat hoa 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 xuat o2 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 xuat o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan xuat o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan xuat o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.