Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap biet lon snippets" » "dac biet lon snippets", "dap viet lon snippets", "can biet lon snippets", "dap bien lon snippets", "dap biet lang snippets", "dap biet rong 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: (((("dap biet lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dap biet lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap biet lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap biet lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.