Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuy hanh o2 snippets" » "thuc hanh o2 snippets", "thuy anh o2 snippets", "thuy canh o2 snippets", "thuy hang o2 snippets", "thuy hanh noi snippets", "thuy hanh hoa 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: (((("thuy hanh 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: (((("thuy hanh o2 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuy hanh o2 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuy hanh o2 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.