Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc mach cua snippets" » "doc sach cua snippets", "hoc mac cua snippets", "duc manh cua snippets", "doc manh cua snippets", "doc cach 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: (((("doc mach 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: (((("doc mach cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc mach cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc mach cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.