Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong bac cau snippets" » "cong tac cau snippets", "dong bac cau snippets", "cong cac cau snippets", "cong bach cau snippets", "cong ba cau snippets", "cong bac can 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 bac cau 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 bac cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong bac cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong bac cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.