Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau chi dep snippets" » "dau khi dep snippets", "du chi dep snippets", "dau cuoi dep snippets", "dau thi dep snippets", "dau cai dep 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: (((("dau chi dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau chi dep snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau chi dep snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau chi dep snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.