Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dai dang so snippets" » "da dang so snippets", "dai nang so snippets", "hai dang so snippets", "dai dang son snippets", "dai dang su snippets", "dai dang do 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: (((("dai dang so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dai dang so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai dang so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai dang so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.