Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"buoi sang o2 snippets" » "buoi hang o2 snippets", "bui sang o2 snippets", "boi sang o2 snippets", "tuoi sang o2 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: (((("buoi sang 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: (((("buoi sang o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( buoi sang o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("buoi sang o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.