Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den tran doi snippets" » "den tuan doi snippets", "den thanh doi snippets", "dang tran doi snippets", "den truan doi snippets", "den trao doi snippets", "den tren doi 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: (((("den tran doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den tran doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den tran doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den tran doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.