Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat cong cau snippets" » "may cong cau snippets", "mai cong cau snippets", "mot cong cau snippets", "mat cong cu snippets", "mat cong chuc snippets", "mat thong cau 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: (((("mat cong cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat cong cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat cong cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat cong cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.