Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang dem toi snippets" » "dang de toi snippets", "dang deo toi snippets", "dang dieu toi snippets", "dang dem hoi snippets", "dang diep toi 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: (((("dang dem toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang dem toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang dem toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang dem toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.