Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc dat tre snippets" » "duoc bat tre snippets", "duoc dai tre snippets", "duoc dan tre snippets", "duoc dat tren snippets", "duoc dat tieu snippets", "duoc dat theo 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: (((("duoc dat tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc dat tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc dat tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc dat tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.