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