Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc dai cau snippets" » "luoc dai cau snippets", "luc tai cau snippets", "duc dai cau snippets", "luc dat cau snippets", "luc da cau snippets", "luc dai hau 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: (((("luc dai 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: (((("luc dai cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc dai cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc dai cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.