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