Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"time hieu he snippets" » "tim hieu he snippets", "tin hieu he snippets", "tich hieu he snippets", "time hieu ve snippets", "time hiem he snippets", "time hieu le 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: (((("time hieu he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("time hieu he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( time hieu he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("time hieu he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.