Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac chien do snippets" » "cuoc chien do snippets", "van chien do snippets", "nam chien do snippets", "cac chien dong snippets", "cac chien dau snippets", "cac chuyen do 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: (((("cac chien 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: (((("cac chien do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac chien do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac chien do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.