Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap phong so snippets" » "dai phong so snippets", "dan phong so snippets", "dat phong so snippets", "dap phong mo snippets", "dap phong cho snippets", "dap cong so 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 phong 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: (((("dap phong so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap phong so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap phong so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.