Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"act van dau snippets" » "bach van dau snippets", "cach van dau snippets", "act van dao snippets", "act phan dau snippets", "act van dau slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("act van dau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("act van dau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( act van dau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("act van dau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.