Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc tinh do snippets" » "duc thinh do snippets", "duc minh do snippets", "dac tinh do snippets", "duc trinh do snippets", "duc tinh doi snippets", "duc tinh da 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: (((("duc tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc tinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc tinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc tinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.