Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"mac cao sio2 snippets" » "mac bao sio2 snippets", "mac cao son snippets", "mac cao so snippets", "mach cao sio2 snippets", "mac ca sio2 snippets", "bac cao sio2 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: (((("mac cao sio2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mac cao sio2 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( mac cao sio2 snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mac cao sio2 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.