Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuu van cung snippets" » "tuu van cuong snippets", "tuu van dung snippets", "tuu van hung snippets", "cuu van cung snippets", "tu van cung snippets", "luu van 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: (((("tuu 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: (((("tuu van cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuu van cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuu van cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.