Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu cao doi snippets" » "lieu dao doi snippets", "lieu co doi snippets", "lieu bao doi snippets", "lieu cho doi snippets", "lieu cau doi snippets", "lieu cac doi 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: (((("lieu cao 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: (((("lieu cao doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu cao doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu cao doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.