Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao hang du snippets" » "dao khang du snippets", "dao hanh du snippets", "dat hang du snippets", "dao hang dau snippets", "dao hoang du snippets", "dao nang du 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: (((("dao hang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao hang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao hang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao hang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.