Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau tren do snippets" » "dau tien do snippets", "dat tren do snippets", "dau tieng do snippets", "dau tren doi snippets", "dau trien do snippets", "dau tren co 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: (((("dau tren 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: (((("dau tren do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau tren do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau tren do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.