Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bac cao so snippets" » "bao cao so snippets", "bac can so snippets", "bac cau so snippets", "bac cao son snippets", "bac co so snippets", "bac cao su 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: (((("bac cao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bac cao so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bac cao so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bac cao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.