Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dac tan hoc snippets" » "duc tan hoc snippets", "dac san hoc snippets", "dai tan hoc snippets", "dac toan hoc snippets", "dac than hoc snippets", "dac van hoc 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: (((("dac tan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dac tan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac tan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac tan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.