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