Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"se khac cao snippets" » "se khac co snippets", "se khau cao snippets", "se khac cuoc snippets", "de khac cao snippets", "he khach cao 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: (((("se khac cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("se khac cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( se khac cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("se khac cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.