Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"quan hang o2 snippets" » "quan hang code snippets", "quan hoang o2 snippets", "quan lang o2 snippets", "quan hanh o2 snippets", "quan hang hoa snippets", "quan hang rok snippets", "quan hang ton snippets"
"python using java snippets" » "python using data 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: (((("quan hang o2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan hang o2 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( quan hang o2 snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan hang o2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.