Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"liu kinh doc snippets" » "lieu kinh doc snippets", "li kinh doc snippets", "hieu kinh doc snippets", "liu kinh hoc snippets", "liu dinh doc snippets", "liu kinh do 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: (((("liu kinh doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("liu kinh doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( liu kinh doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("liu kinh doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.