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