Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mao van cac snippets" » "dao van cac snippets", "cao van cac snippets", "hao van cac snippets", "mao van hac snippets", "mao van cau snippets", "mao van bac 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 cac 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 cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mao van cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mao van cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.