Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua hoang cd snippets" » "quan hoang cd snippets", "qua hang cd snippets", "quang hoang cd snippets", "qua hoang cao snippets", "qua hoang chi snippets", "qua hoang _ 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: (((("qua hoang cd snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("qua hoang cd snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua hoang cd snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua hoang cd snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.