Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi kien doi snippets" » "phi tien doi snippets", "chi kien doi snippets", "phan kien doi snippets", "phi bien doi snippets", "phi kien dai snippets", "phi kien noi 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: (((("phi kien doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi kien doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi kien doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi kien doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.