Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc phat mon snippets" » "duc phan mon snippets", "duc phap mon snippets", "duc pham mon snippets", "duc hat mon snippets", "duc phat minh 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 phat mon 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 phat mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc phat mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc phat mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.