Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mao van hoe snippets" » "dao van hoe snippets", "cao van hoe snippets", "hao van hoe snippets", "mao van hoa snippets", "mao van hoc snippets", "mao van hieu 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: (((("mao van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mao van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mao van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mao van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.