Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luu van cung snippets" » "luu van cuong snippets", "luu van dung snippets", "luu van hung snippets", "cuu van cung snippets", "luan van cung snippets", "luu hanh cung 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: (((("luu van cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luu van cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luu van cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luu van cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.