Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khong te he snippets" » "khong he he snippets", "khong de he snippets", "khong ke he snippets", "khong te ho snippets", "khong te de 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: (((("khong te 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: (((("khong te he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khong te he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khong te he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.