Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"minh danh o2 snippets" » "minh danh o snippets", "minh danh hoa snippets", "minh danh hoc snippets", "dinh danh 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: (((("minh danh 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: (((("minh danh o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( minh danh o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("minh danh o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.