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