Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan do doi snippets" » "doan o doi snippets", "toan do doi snippets", "doanh dao doi snippets", "doan do dai snippets", "doan do moi snippets", "doan bo doi 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: (((("doan do doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan do doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan do doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan do doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.