Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trac van mo snippets" » "tran van mo snippets", "tac van mo snippets", "truc van mo snippets", "trac van mao snippets", "trac van do snippets", "trac van ho 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 van mo 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 van mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trac van mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trac van mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.