Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian hang o2 snippets" » "gian lang o2 snippets", "gia hang o2 snippets", "gan hang o2 snippets", "gian hang hoa snippets", "gian hang rok snippets", "gian hang ton 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: (((("gian hang 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: (((("gian hang o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian hang o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian hang o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.