Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan doc cau snippets" » "phan duoc cau snippets", "phan duc cau snippets", "than doc cau snippets", "phan hoc cau snippets", "phan doc cao snippets", "phan doc chat 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: (((("phan doc 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: (((("phan doc cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan doc cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan doc cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.