Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trac da cau snippets" » "trac dia cau snippets", "tac da cau snippets", "trai dat cau snippets", "trac dat cau snippets", "trac va cau 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: (((("trac da 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: (((("trac da cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trac da cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trac da cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.