Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong dac cha snippets" » "cong tac cha snippets", "cong dan cha snippets", "cong cac cha snippets", "cong dac cho snippets", "cong day cha snippets", "cong doc chat 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 dac cha 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 dac cha snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dac cha snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dac cha snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.