Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong vinh dh snippets" » "cong trinh dh snippets", "trong vinh dh snippets", "cong viec dh snippets", "cong sinh dh snippets", "cong vinh thi 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: (((("cong vinh dh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong vinh dh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong vinh dh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong vinh dh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.