Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua dao du snippets" » "dua vao du snippets", "duc dao du snippets", "lua dao du snippets", "dua dao duc snippets", "dua dao duy snippets", "dua dao do 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: (((("dua dao du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua dao du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua dao du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua dao du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.