Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap minh can snippets" » "dao minh can snippets", "dan minh can snippets", "dap tinh can snippets", "dap minh chanh snippets", "dap minh danh snippets", "dap minh tuan 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 minh can 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 minh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap minh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap minh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.